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Guide to DIY Wiretapping

Geeks are Sexy writes "ITSecurity.com has a nice piece this week on how wiretapping works and how you can protect yourself from people who wants to snoop into your life. From the article 'Even if you aren't involved in a criminal case or illegal operation, it's incredibly easy to set up a wiretap or surveillance system on any type of phone. Don't be surprised to learn that virtually anyone could be spying on you for any reason.'" Maybe I'm on the wrong track here, but I guess I assumed that wiretapping now happened in secret rooms at the telco, and not by affixing something physically to a wire in your home, but I'll definitely be aware next time I hear a stranger breathing next time I'm stuck on hold.

183 comments

  1. Hear a stranger breathing? by Anonymous Coward · · Score: 5, Funny

    If someone is dumb enough to leave the microphone connected on an intercept phone, they deserve to get caught.

    1. Re:Hear a stranger breathing? by Lost+Penguin · · Score: 5, Funny

      You sneeze while on the phone with your friend, and hear "gesundheit".... twice.

      --
      I am the unwilling control for my Origin.
    2. Re:Hear a stranger breathing? by Anonymous Coward · · Score: 0

      I think that was the joke.

    3. Re:Hear a stranger breathing? by Arkham · · Score: 0

      I'm pretty sure anyone wiretapping my house would die of boredom.

      --
      - Vincit qui patitur.
    4. Re:Hear a stranger breathing? by BadHaggis · · Score: 5, Funny
      To the stranger listening on my phone.

      Please provide a transcript of the shopping list my wife just gave me. I think that I may have forgotten to write something down.

      --
      Homo homini lupus
    5. Re:Hear a stranger breathing? by Thelasko · · Score: 3, Informative

      If someone is dumb enough to leave the microphone connected on an intercept phone, they deserve to get caught. You raise a good point. Using a plain speaker is risky, because it can potentially double as a microphone. Telephones have a duplex coil which prevents this from happening.
      --
      One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    6. Re:Hear a stranger breathing? by Anonymous Coward · · Score: 0

      Dumbness aside, someone was allegedly listening in while you're on hold.. how bored can one be?

    7. Re:Hear a stranger breathing? by PPH · · Score: 1

      Hello, NSA? I've had a few too many to drink. Could you please trace this call and tell me where I am?

      --
      Have gnu, will travel.
    8. Re:Hear a stranger breathing? by Lord+Flipper · · Score: 1

      Dumbness aside, someone was allegedly listening in while you're on hold.. how bored can one be?

      heheh. You know, there's a flip side to that.

      I was doing some phone sales, and often would hear a husband or wife, in the background, talking, and I would say, "Is that your partner? Can you get him/her on another extension so we can all hear each other and ask questions?"

      Invariably, the one who was 'in the background' would go for it (for obvious reasons/issues of 'control') and after running through my scenarios and answering some queries I'd say, "Oh no, I have a very quick call coming in, let me take this, I'll be quick..." They'd agree, I'd flip a switch and mute my mic, and sit there and listen to the two of them 'argue/discuss' the pitch, always assuming I was 'gone'.

      I'd listen, determine who my ally was in the situation, hear the crux of the objection, come back, apologetically, from my 'other call' and close the deal. You could have set your watch to the scenario, it was that regular.

      I trained people, live, with my 'couples' on speaker phones, as I pretended to be on another line. The trainees were startled, at first. Heheh, that was Montréal, the Phone Capitol of the World, at that time.

    9. Re:Hear a stranger breathing? by laejoh · · Score: 0

      I for one write everything I'm gonna say out on paper, encrypt the full text and then say it out loud in navajo code!

  2. It was.. by f8l_0e · · Score: 2, Informative

    The official, albeit illegal kind do occur at the telco, at least these days. Before modern switching a residential tap would have be the way it was done.

    1. Re:It was.. by omeomi · · Score: 2, Insightful

      They are legal when they bother to get a judge to sign a warrant. It's only when they don't get a warrant that they're illegal.

    2. Re:It was.. by blcamp · · Score: 2, Interesting

      They are legal when they bother to get a judge to sign a warrant. It's only when they don't get a warrant that they're illegal. It's only illegal if someone (or an entity) gets caught, you're able to prove it court, are able to get a ruling in your favor in court, and are able thereafter to enforce remedial action.

      Good luck with all that.

      --
      The problem with socialism is that they always run out of other people's money. - Margaret Thatcher
    3. Re:It was.. by N1ck0 · · Score: 3, Interesting

      Of course you can still tap any POTS line the good old fashion way. Its just a matter of accounting for the voltage drop on the line. Although yes if you are the telco it is just easier to capture everything while it is in digital format on the switch. Now if you don't use analog, inline (some random place between the CO and customer) tapping can be a bit harder. You basically either have to record the signals on the line and decode it later, or toss a non-terminating CSU/test kit in the line without making too much of a disruption in the signal.

    4. Re:It was.. by omeomi · · Score: 4, Insightful

      It's only illegal if someone (or an entity) gets caught, you're able to prove it court, are able to get a ruling in your favor in court, and are able thereafter to enforce remedial action. Good luck with all that.

      Well, it's still illegal. Just because the powers that be think they can ignore laws, and have the power to keep from getting prosecuted doesn't change the legality. Maybe someday they'll be brought to justice. Doubt it, though.

    5. Re:It was.. by TheGratefulNet · · Score: 3, Insightful

      Well, it's still illegal. Just because the powers that be think they can ignore laws, and have the power to keep from getting prosecuted
      doesn't change the legality. Maybe someday they'll be brought to justice.


      legality is only for those of us who are NOT in law enforcement or the government.

      you can talk all you want about constitution this or law that; but while you rot in prison being raped by other guys, tell me again how 'illegal'it was that they tapped you.

      laws are an abstract concept. being locked away is the farthest thing from being abstract.

      they all know this and this is why we are kept in fear (ie, in check).

      (lovely country/world we got here, huh?)

      --

      --
      "It is now safe to switch off your computer."
    6. Re:It was.. by mr_mischief · · Score: 1

      Even with a warrant, it's only legal if they told the judge the truth to get the warrant. There have been documented cases of agencies materially misrepresenting investigations in order to get warrants, too.

    7. Re:It was.. by Anonymous Coward · · Score: 0

      What he said.

    8. Re:It was.. by rootooftheworld · · Score: 1

      yup, absolutlie lovely

      --
      I know full well that tobacco is bad for you, so I smoke weed with crack
  3. voltage drop by omeomi · · Score: 5, Interesting

    Most of the land line suggestions in that article don't seem to bother with taking care of the noticeable voltage drop caused by adding an extra phone to a call. You can tell when somebody else in your house picks up the phone while you're on it because the person on the other end gets quieter. The same thing would happen if you plugged a phone into the line outside your house. I thought professional surveillance systems did something to make up for this, so there's no noticeable change in volume when the wiretapper starts listening.

    1. Re:voltage drop by faloi · · Score: 5, Insightful

      The downside to some of the audible cues is that, at least amongst people I know, the use of cordless phones is prevalent. And most of the people I know tend to immediately write off any abnormality (shifts in volume, clicking, etc.) in their conversation as being because of the phone. Which is probably the case. Either that or I need a better class of acquaintances.

      --
      "It is a miracle that curiosity survives formal education." -Albert Einstein
    2. Re:voltage drop by f8l_0e · · Score: 2, Interesting

      If you were going to build your own tap, you could add a variable resistor inline to the hook switch. Before listening in on the call, you would dial the resistor up to its highest value, pick up the line, and then reduce the resistance until the audio was at a level you could understand. You could take it down to its minimum value as long as you did it slow enough that the volume drop wasn't noticeable. The professional taps would intercept as soon as the line was picked up though. You wouldn't notice a drop in volume.

    3. Re:voltage drop by Ucklak · · Score: 1, Interesting

      It depends on your REN number.
      Back in the days of modems, my REN was about 4.5.

      No matter what device they attach, it will modify your REN number and if it's higher than 4, you'll be able to tell.

      --
      if you steal from one source, that is plagiarism, if you steal from many, well, that's just research.
    4. Re:voltage drop by bugnuts · · Score: 4, Interesting

      The Ringer Equivalence Number is just the number of phones the ringer can drive. More than that, and they won't have the voltage to ring.

      It has nothing to do with talking on the phone.

      What you'd want to do is use an inductive microphone or even an inductive loop around the actual cable. It doesn't touch it, and is very difficult to detect if it's nearby the cable... Search for the USS Halibut, and how it tapped a Soviet military underwater cable by using a nearby inductive coil which never interfered with the cable.

    5. Re:voltage drop by mollymoo · · Score: 5, Interesting

      If you use a normal phone, yes. Until recently I worked in telecoms and we were all issued with a near perfect bugging device - a butt phone with monitor mode. Monitor mode is high-impedance so undetectable without some clever kit. Connect it to the right pair, hit the button and you can listen in undetected at will. You can buy one for a hundred quid ($200) or so, probably less if you shop around. Monitoring lines was standard practice, albeit briefly, when working on a line - you listen to make sure nobody is using the phone, then dial a test number using the line to make sure it's the right circuit, then do whatever you need to do. You aren't supposed to listen to people's conversations, merely ensure the line isn't in use, but that doesn't mean it didn't happen.

      Telecoms cabinets aren't all that secure, it's easy to break in and put a tap in one and with a little care it wouldn't be obvious to an engineer working in the cabinet there was anything amiss. You could make a tap with a microcontroller with an ADC and some external RAM. The hard part would be finding the right pair without access to the phone company records or target's premises.

      --
      Chernobyl 'not a wildlife haven' - BBC News
    6. Re:voltage drop by Anonymous Coward · · Score: 3, Informative

      The "professional" wiretap uses a buttset. These have bed-of-nails clips for monitoring without leaving any particularly obvious traces (a small hole is made through the sheath of the wire, that is all, no cutting or stripping is involved).

      They also have both a regular and monitor mode. The regular mode makes it work like a normal telephone, with about 600 Ohms impedance, causing a voltage drop. The monitor mode has 100+ kOhms impedance, which will cause a voltage drop low enough to be indistinguishable from a moisture leak (happens all the time on analog phone lines).

      Here's a nice one you can buy right now!

    7. Re:voltage drop by smooth+wombat · · Score: 5, Funny

      True story: I have a cordless phone and one time I was talking with my mom and the phone acted a bit weird. She sounded somewhat quieter and there seemed to be static. I shook the phone thinking there was a loose connection and the static was gone but her voice was still quieter.

      She asked me what was going on and I told her, "Eh, must be the wiretap on my phone."

      As far as I can tell, I have not had that problem since that time.

      *cue spooky music*

      --
      We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
    8. Re:voltage drop by eheldreth · · Score: 1

      If I remember correctly one of the "BOXES" worked on this theory. Something about plugging a lamp into your phone line which would cause the voltage regulator on the surveillance equipment to increase it's output to the point it shorted out and destroyed the offending electronics. I'm not sure if it would have actually worked but I don't think they need to physically tap anything any more so it's a non issue. Maybe I'll have to find those floppies from high school that I hid in a vent in my parents house to refresh my memory.

      --
      The perversity of the Universe tends towards a maximum. - O'Toole's Corollary
    9. Re:voltage drop by Kingston · · Score: 2, Interesting

      A piezoelectric earpiece, like the type that used to be supplied with cheap radios, is perfect for this application. It has a very high input impedence and a tiny current draw. You would not be able to detect its use, there would be no drop in volume on the line.

    10. Re:voltage drop by mdielmann · · Score: 1

      Most of the land line suggestions in that article don't seem to bother with taking care of the noticeable voltage drop caused by adding an extra phone to a call. You can tell when somebody else in your house picks up the phone while you're on it because the person on the other end gets quieter. The same thing would happen if you plugged a phone into the line outside your house. I thought professional surveillance systems did something to make up for this, so there's no noticeable change in volume when the wiretapper starts listening. I've found that when sharing a phone call with someone (two of us on different phones in the house) that if you held down the mute button, the volume drop pretty much went away. It's worked for me as recently as a year or so ago. With some connections, it's the only thing that makes it possible for either person on the shared line to hear the conversation well.
      --
      Sure I'm paranoid, but am I paranoid enough?
    11. Re:voltage drop by noidentity · · Score: 5, Funny

      It's even simpler in the USA to find out if the line is tapped. If the year is 2000 or later, it is.

    12. Re:voltage drop by Hoi+Polloi · · Score: 1

      we were all issued with a near perfect bugging device - a butt phone

      You were buggered with a "butt phone"? I hope they didn't bother calling you the next day.

      --
      It is by the juice of the coffee bean that thoughts acquire speed, the teeth acquire stains. The stains become a warning
    13. Re:voltage drop by kgskgs · · Score: 1

      I have one similar story too. One time I was talking to a friend of mine who has Eastern European/ Russian accent.
      While talking he said something about hacking and there was a noticeable change in the phone line. His voice sounded quieter and echoed a bit. Both of us thought if some wiretapping is going on and we joked about it. We were not discussing anything troublesome, so there was no problem. But we remember it.

    14. Re:voltage drop by Kadin2048 · · Score: 1

      It hasn't happened in a few years, but back in the AMPS days, I used to routinely hear other people's conversations while using the cellphone. Sometimes it was clear that they could also hear us; it was almost a party-line situation.

      There also were a few times when it apparently switched between cells and didn't move the call correctly, because I suddenly ended up talking to someone who wasn't the person I had been on the phone with a moment before.

      When they worked, I think the audio quality was frequently better out of the AMPS phones than out of the modern digital cellular units, though. Plus, a mobile unit put out something like 15 Watts.

      By far the dumbest thing about analog cellphones was how the FCC went around and insisted that nobody could buy an 800MHz scanner that had those bands in it ... now that cell technology is dead, but we still have crippled scanners.

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    15. Re:voltage drop by StormReaver · · Score: 3, Funny

      "...a butt phone with monitor mode."

      You must have had a shitty job listening to all of those crappy conversations.

    16. Re:voltage drop by Deadstick · · Score: 1

      That band was generally locked out by a jumper on the circuit board, and all you had to do to restore it was cut the jumper. And on several scanner models, the jumper projected an eighth inch above the board for easy location and snipping...

      rj

    17. Re:voltage drop by Anonymous Coward · · Score: 0

      Most of the land line suggestions in that article don't seem to bother with taking care of the noticeable voltage drop caused by adding an extra phone to a call. You can tell when somebody else in your house picks up the phone while you're on it because the person on the other end gets quieter. The same thing would happen if you plugged a phone into the line outside your house. I thought professional surveillance systems did something to make up for this, so there's no noticeable change in volume when the wiretapper starts listening. Right, didn't happen with the harris communications TS-22 AL butt in set I used to own (butt in set is a mobile land line used by telco line service people, think big red phone hanging from their belt) however it did happen with the harris TS-21 I used to own. The harris TS-22 contains a 9 volt battery and a built in monitor mode. The AL spec, one of the letters determine that the butt set is safe for data communications lines and will not cause interference or allow you to take the line off the hook if it detects, say a T1 channel or a dsl line. The fact that it is "safe" indicates that it knows how to not tamper with communications on the line in the least as data disruption can be colossal (think banks dedicated data lines). I think 1975 was the year the FBI probably figured out how to avoid making the tap noticeable. I am just guessing on the year but the fact is harris is also a seller to the military and telco specialist company that sell to most RBOC and telco firms so I am sure if the line can be protected against "damages" then they probably showed the FBI how and not vice versa. Furthermore, their butt in set is only useful if you are not affiliated with a law enforcement agency with keys to the telco. The RBOC can monitor any line any time without creating the slightest change in the line.
    18. Re:voltage drop by Anonymous Coward · · Score: 0

      I used to have a really old cordless phone that didnt have encryption or anything like that and i used to be able to turn it on and hear the neighbours on their phone. I once heard my neighbour being dumped by her boyfriend - she was a little surprised when i said i was sorry to hear she had broken up with him - haha

    19. Re:voltage drop by Anonymous Coward · · Score: 0


      Until recently I worked in telecoms and we were all issued with a near perfect bugging device - a butt phone

      A Butt phone? Is that for talking crap?

    20. Re:voltage drop by a_real_bast... · · Score: 1

      That was the solution for when the line was "locked" to allow a trace; the authorities wouldn't let the voltage on the line change, maintaining the connection. Solution? $electrical_device (a light was recommended, but the voltage draw was the important part) with an RJ25 on the end of the cord, which would draw enough to allow the connection to be broken. This explanation is purposely vague, as I remember very, very little about it.

      --
      You're making me think. You won't like me when I'm thinking.
    21. Re:voltage drop by Anonymous Coward · · Score: 0

      I think I saw that on 4chan once...

    22. Re:voltage drop by richard.cs · · Score: 1

      The simple way of tapping a phone without extra voltage drop is to use a crystal earpiece. Connected in parallel with the line its high impedance causes no significant voltage drop and as such is totally undetectable. I have one with the wires soldered onto a pair of thin needles that can just be poked through the insulation on a phone line to contact the wires. With it I can hear everything said but the clicks when people hang up the phone and during ringing are painfully loud if it's in your ear at the time.

  4. Been done by pegr · · Score: 1

    And I posted it back in August:

    http://slashdot.org/~pegr/journal/180007

  5. No thanks... by Psmylie · · Score: 5, Funny
    I'll hold off on trying any of their wiretapping suggestions until they release guides on "DIY Legal defense" and "How to Avoid Getting Buggered in a Federal Prison".

    Still, if you're feeling paranoid, by all means check your phones. It's true, nosy neighbors could indeed be spying on you. Never underestimate the average person's voyeurism urges...

    --

    psmylie's dictionary: Godzillion (noun) Any number large enough to destroy Tokyo

    1. Re:No thanks... by GeckoAddict · · Score: 1

      I'm not worried about voyeurism since because my video camera surveillance system pointing at the neighbors would have recorded an event :)

    2. Re:No thanks... by raddan · · Score: 1

      The only reasonable thing to do, if you're worried about your communications being monitored, is to assume that they are being monitored. Relying on the fact that your phone is not tapped is just a bad idea, and this is why all security nowadays happens at the endpoints.

    3. Re:No thanks... by Kadin2048 · · Score: 1

      With most people, I doubt you'd have to go to any sort of work to intercept their phone calls -- chances are, they're using a cordless phone. I suspect the great majority of the installed base of cordless phones are just plain-old 49 or 900MHz FM types, that you could pick up with a $40 RadioShack scanner.

      Intercepting one of the newer digital ones, or even an analog one on 2.4GHz, would be harder, but still probably easier than physically tapping the line; plus there's no chance it can be detected.

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    4. Re:No thanks... by Landshark17 · · Score: 1

      Especially if your name is Lars Thorwald.

      --
      This sig is false.
  6. How do you wiretap a cell phone? by DRAGONWEEZEL · · Score: 1

    Hard lines went out when The Matrix went out of theaters. I know there is some frequency scanning intercept type things they can do, but I thought digital cells w/ voice privacy and all that were pretty good from phone to switch???

    --
    How much is your data worth? Back it up now.
    1. Re:How do you wiretap a cell phone? by introspekt.i · · Score: 3, Funny

      Because how can you wiretap something with no wires? It must be completely immune to wiretapping XD.

    2. Re:How do you wiretap a cell phone? by bugnuts · · Score: 1

      Cellphones are easily tapped... with the right equipment. That's the catch, the equipment is very expensive (last I checked, a few years ago).

      Analog cellphones were incredibly easy to listen to with a scanner, but this is no longer the case since most is digital.

    3. Re:How do you wiretap a cell phone? by kernelphr34k · · Score: 1

      What's this landline thing....a phone with cables? haha j/k.

      I've had a cell phone for years as the only way of communication. You need me? Call my cell or hit me up on AIM or something. Never had a landline for myself, always running around and never at home much. So more of a convenience to have a cell than a landline. Plus why pay for 2 phone services? Yeah, a land line may be ~$30 a month, but I can apply that towards the cell bill.

      I see it as family's or the older generation that still have land lines. It's natural, and people have been doing it forever.

    4. Re:How do you wiretap a cell phone? by Hyppy · · Score: 1

      Did you bother to RTFA?

      Didn't think so. It's scary what you can do to someone's cell phone.

    5. Re:How do you wiretap a cell phone? by f8l_0e · · Score: 1

      The article references software for smart phones that you can install on your spouses/coworkers/employees/etc. phone that function as a back door. Additionally, there has been mention that the scrambling on GSM phones has an implementation vulnerability that can be broken with a couple of FPGAs. There was an article on /. within the last year or so.

    6. Re:How do you wiretap a cell phone? by DRAGONWEEZEL · · Score: 2, Interesting

      Every method I have seen so far requires physical access.
      Quite frankly, it's a threat, but no more than the famous slashdot meme: If you have physical access you have root.

      Who would abandon their celly? I take mine to the bathroom w/ me. I don't let strangers in my house, and it doesn't leave my pocket unless I am making/recieving a call.

      I think this is really just FUD to freak people out. Hey whats that? Why does my phoen blink? Oh, it's just a reply to a post on /.!

      --
      How much is your data worth? Back it up now.
    7. Re:How do you wiretap a cell phone? by GeckoX · · Score: 4, Insightful

      So true, though I'm about to have to add a land line back in the mix again unfortunately.
      Went out with my wife a couple weeks ago, got a baby sitter. Left our contact numbers with her. She asks "Where's the phone?". Er...
      Had to leave my cell phone behind for her to use in case of emergency.

      Won't be many more years before my son has friends calling. I either leave him unable to be contacted by phone, let his friends call my cell, or get a land line.

      Nope, landlines aren't dead yet and won't be for some time I'm sure.

      --
      No Comment.
    8. Re:How do you wiretap a cell phone? by Hatta · · Score: 1

      It may be easier than you think.

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      Give me Classic Slashdot or give me death!
    9. Re:How do you wiretap a cell phone? by fprintf · · Score: 1

      Get your son his own cell phone. For $10 a month you can get a Tracfone in the U.S., or for that same amount you can often add a phone to a family plan. A heck of a lot cheaper than a landline.

      With that said, my family is still on a landline. We do have the Tracfones but they end up being so expensive per minute that the landline plus a $.03 per minute MCI long distance card is the way we talk to family & friends most of the time. I used 23 cell phone minutes last month.

      --
      This post brought to you by your friendly neighborhood MBA.
    10. Re:How do you wiretap a cell phone? by Shakrai · · Score: 1

      Get your son his own cell phone. For $10 a month you can get a Tracfone in the U.S., or for that same amount you can often add a phone to a family plan. A heck of a lot cheaper than a landline.

      How is a Tracfone with per-minute costs that range from $0.20 to $0.50 cheaper than a landline with unlimited local calling?

      --
      I want peace on earth and goodwill toward man.
      We are the United States Government! We don't do that sort of thing.
    11. Re:How do you wiretap a cell phone? by fprintf · · Score: 1

      If the landline costs $30 a month, as the parent posts suggests, then a 1 year card w/ bonus codes for $100 giving 1100 minutes (so $8.33 per month), and 90 minutes of talk time per month is not a bad deal *for a child*.

      I agree, for talking locally at the rate that most kids do, a landline with unlimited local calling makes a ton of sense over any pay-as-you-go cell plan. However if a person already has a family plan cell phone with unlimited minutes, the $10 extra phone line would make better sense.

      --
      This post brought to you by your friendly neighborhood MBA.
    12. Re:How do you wiretap a cell phone? by jcgf · · Score: 1

      SDR on it's own won't help you. You need to be able to break the crypto used on the new phones. Although there has been some progress on that: http://www.schneier.com/cmea.html

    13. Re:How do you wiretap a cell phone? by Shakrai · · Score: 1

      I don't know many teenagers that limit themselves to 90 minutes a month on the phone ;)

      I'd grant you the point for an unlimited wireless plan but how many people are going to fork over the $100 a month to get one of those? And aren't they more than that for a family plan anyway? For most people with typical usage a cell phone with a low minute plan (or even a prepaid phone) and a landline for calls at home will be a much cheaper option.

      --
      I want peace on earth and goodwill toward man.
      We are the United States Government! We don't do that sort of thing.
    14. Re:How do you wiretap a cell phone? by BBandCMKRNL · · Score: 1

      For most people with typical usage a cell phone with a low minute plan (or even a prepaid phone) and a landline for calls at home will be a much cheaper option. I know you said "most", but unless you have kids who will spend hours on the phone before the unlimited night minutes kick in, you probably don't even need the landline. We, parents, and one adult child, have a family plan with rollover minutes, no landline, and we've never had a bill for excess minutes.
      --
      Without the 2nd Amendment, the others are just suggestions.
    15. Re:How do you wiretap a cell phone? by Itninja · · Score: 1

      I see it as family's or the older generation that still have land lines. Well them, and anyone who has DSL, or wants a communications device that doesn't depend on LOS to a cell tower, or wants equipment with a lifespan exceeding 5-10 years.

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    16. Re:How do you wiretap a cell phone? by Shakrai · · Score: 1

      *shrug*, I'd rather have the landline and keep my minute plan low than just have the cell phone if I can do the former for the same cost or cheaper.

      --
      I want peace on earth and goodwill toward man.
      We are the United States Government! We don't do that sort of thing.
    17. Re:How do you wiretap a cell phone? by just+fiddling+around · · Score: 1

      Nah, get him an IP-phone. The kind that attaches automatically to any wifi hotspot. He'll be the coolest guy on the bunch when he tells his homies how little he pays for his not-cellphone! (NOT, but a geek can dream...)

      --
      You're not old until regret takes the place of your dreams.
    18. Re:How do you wiretap a cell phone? by W8TVI · · Score: 1

      My family hasn't had a land line since around 2002. couldn't see paying for cells for all three of us and a home phone, too.

      It cost almost as much to have just the home phone as it did to have 3 cell phones.

    19. Re:How do you wiretap a cell phone? by Beryllium+Sphere(tm) · · Score: 1

      There are a number of known attacks on the GSM encryption.

    20. Re:How do you wiretap a cell phone? by Kadin2048 · · Score: 1

      You could get a VoIP line for the house; this is what I've done for situations like that.

      An "ATA" -- basically an Ethernet to analog telephone adapter -- will run you less than $50 and it's a one-time expense. I recommend the Linksys PAP2T-NA (just make sure you get the "NA" version and not one of the ones that's locked to Vonage, etc.).

      Then you just plug in any old analog phone you want, corded or cordless, and configure the box to point to the VoIP provider of your choice. I use Callcentric; they'll give you an incoming number in your choice of most area codes for a few dollars a month, unlimited minutes, and outgoing calls are about $0.02USD on a pay-per-use plan.

      It's significantly cheaper than even the base rate for real POTS service where I live, plus there's no long distance "surprises," you can move it from place to place with you if you want, free voicemail, incoming fax, etc. They provide (mandatory) E911 service if you live in the U.S., also.

      The only real downside is that it obviously won't work if your broadband service goes out, which is a good argument for putting your broadband modem, router, and the ATA on a UPS.

      Once you absorb the up-front cost of the ATA, the running costs for me were less than bumping my cell phone up to a plan with more minutes, which was the alternative I'd been considering. Plus, since getting it, I've realized that I really liked having a "house phone" in addition to individual cellphones. I just don't like paying $15 a month for it.

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    21. Re:How do you wiretap a cell phone? by bryce4president · · Score: 1

      Skype anyone? You already have internet right? And without a phone its probably cable (you'd have to have an aneurysm to pay for sat internet).

      So sign up for skype and let them talk away, or vonage. Either way its cheaper than POTS and if used any amount at all is way cheaper than a tracphone.

    22. Re:How do you wiretap a cell phone? by Shakrai · · Score: 1

      Eh, I've never been a big fan of VoIP. I realize it works well for some people but to my way of thinking if I'm going to have a fixed line I'd rather have the reliability of POTS. Any VoIP solution is going to be held hostage to my less than stable internet and power connections.

      Right now I'm cellular-only. No need for a fixed line when I'm rarely home. If I had family members or roommates I'd probably want a POTS line in the house though.

      --
      I want peace on earth and goodwill toward man.
      We are the United States Government! We don't do that sort of thing.
    23. Re:How do you wiretap a cell phone? by Anonymous Coward · · Score: 0

      Not to mention, at least down here in the South, landline phones are damn handy for those weeks (hopefully only weeks) after the hurricane has passed and you have no power. I fixed almost every landline connection for a 5 block radius at least twice in the last 4 years.

    24. Re:How do you wiretap a cell phone? by Skuld-Chan · · Score: 1

      I'm sure if you're married you have the opportunity to pick up your partners phone pretty easily to install stuff on it. I leave my phone in the key cup by my front door - sure its not out of sight, but I don't carry my phone to the bathroom at home :).

    25. Re:How do you wiretap a cell phone? by soundguy · · Score: 1

      You didn't even need a scanner. The frequencies of analog were right in the middle of the UHF TV band. You just needed an old TV with a UHF tuner.

      --
      Nothing worthwhile ever happens before noon
    26. Re:How do you wiretap a cell phone? by BBandCMKRNL · · Score: 1

      *shrug*, I'd rather have the landline and keep my minute plan low than just have the cell phone if I can do the former for the same cost or cheaper. Of course. In our case, we couldn't. When we canceled our landline several years ago, it was ~$55/month and climbing because, as the representative told us, "You won't take any of our bundled packages." It didn't matter that it was impossible for us to take any of their bundles because they all included DSL and we were too far from the CO to get DSL. You can buy a lot of cell phone minutes for $55/month and that was WITHOUT any long distance plan.
      --
      Without the 2nd Amendment, the others are just suggestions.
    27. Re:How do you wiretap a cell phone? by bryce4president · · Score: 1

      My wife and I also only have cell phones. We have cable internet because it was cheaper then paying for a phone one AND dsl. I'll probably just add any kids we have to our cell plan and then monitor their usage. You can even distribute minutes to each number so they can't run up the bill. Sounds good to me :)

    28. Re:How do you wiretap a cell phone? by oloron · · Score: 1

      yes but you are overlooking the important thing, the taps are carried out at the switch..

    29. Re:How do you wiretap a cell phone? by DRAGONWEEZEL · · Score: 1

      True but on that note, the wife also has root on the computer, and since she is married to me, she also has access to whatever records she wants.

      --
      How much is your data worth? Back it up now.
  7. A blast from the past by chemosh6969 · · Score: 5, Funny

    It's the 90s bomb making/revenge/wiretapping text file guides all over again. Only this time it's Web 2.0

    1. Re:A blast from the past by dubloe7 · · Score: 1

      I can practically feel people downloading the anarchist's cookbook now...

      --
      "I worry that some day my child will ask me, 'Dad, where were you when they took freedom of the press from the internet?
    2. Re:A blast from the past by f8l_0e · · Score: 1

      That's good. You have taken your first step into a larger world.

  8. Stranger things by Bombula · · Score: 1

    Not sure about strangers breathing, but I often hear several other conversations while on my cellphone (AT&T). If you can tap into other folks' lines by accident, I figure it's readily feasible to do so on purpose.

    --
    A-Bomb
    1. Re:Stranger things by VeNoM0619 · · Score: 1

      Or perhaps you are hearing white noise and it's Ghosts? I think your phone is possessed.

      --
      Disclaimer: I am not god.
      We may not be created equal
      But we can be treated equal.
  9. in the day by dubloe7 · · Score: 1

    Ah, the days of a beige box made out of a cordless phone and some batteries... Unfortunately those are also the days of getting a 90 volt shock when the phone rings unexpectedly.

    --
    "I worry that some day my child will ask me, 'Dad, where were you when they took freedom of the press from the internet?
  10. "Open up your phone's receiver" by Steauengeglase · · Score: 3, Funny

    Yes, because corporate espionage is so often carried out by nefarious time travelers from the 70s and 80s. This gem should also include look for men with wavy hair and bright rays from the nearest time gate.

    1. Re:"Open up your phone's receiver" by liquidf · · Score: 1

      how about a time traveler with a mullet?

      --
      i've had just about enough of your vassar bashing.
  11. I can just see the darwin awards by Denger256 · · Score: 2, Funny

    From TFA
    "Listen to other people's calls through your own basic telephone by hooking up your phone to a part of the original line that runs outside the house of your target."

    I can just see the Darwin awards on this one when some idiot mistakes the main power line for a phone line when looking for the "red and green wires". ZAP

    1. Re:I can just see the darwin awards by XHIIHIIHX · · Score: 1

      This is why I run all my power cables through that innocuous grey "network interface box" outside. All the phone lines are rerouted way prior to the grey box, where it hits the house at the roof, so you can't kill of my alarm system. Also put a screamer alarm in your NIC box for laughs. You get an FM transmitter that goes inside the earpiece of an old landline phone for $20 at like hobbytronics. http://www.hobbytron.com/fm-wireless-phone-telephone-transmitter.html The parts are only about $1 tho.

  12. Much harder to detect by Thelasko · · Score: 1

    In theory, couldn't you use a current loop probe? You wouldn't even have to connect any wires. Just the right signal processing and you're done.

    Disclaimer: I'm not an EE

    --
    One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    1. Re:Much harder to detect by eakerin · · Score: 1

      You're looking for an Inductive Amplifier. They are commonly used for tracing wires to pick up the tone from the tone generator you put on the other end of the wire.

    2. Re:Much harder to detect by Anonymous Coward · · Score: 1, Funny

      Neither am I. But I sometimes play one on the Internet; and then I keep an eye on the news to see what havoc my bad advice causes.

      And yes, you could use a current loop probe, sorta like the one you link to. Just put it in the right place, hook up the correct other equipment (speakers are always good), put a paper clip in the nearest wall socket (you have to make sure you are earthing yourself so that you don't mess up the signal), and go for gold!

    3. Re:Much harder to detect by Anonymous Coward · · Score: 0

      no. sorry.

  13. proper telco test sets for t1, oc3, etc.. can do by Anonymous Coward · · Score: 0

    just an fyi folks.

    a proper t1 test set for example can easily drop
    a DSO from a T1 and listen in on a call. You just
    jack into the monitoring ports on a DSX panel in
    the central offices. I have seen fancier test sets
    that can do larger circuits but I cannot afford them.

    next they would get a T1 drop from the voice switch.
    CALEA for example. Feds use that.

    Actually attaching wires to the FXS/copper is so
    old fashioned that it boggles my mind it is mentioned.

  14. You don't need a phone to listen in.. by the_rajah · · Score: 2, Interesting

    If your listening device uses capacitive coupling, then there's no current drain to draw down the nominal 50 volts across an on-hook POTS line. Radio Shack used to sell a little box that coupled like that and also would turn on a recorder when the line went off-hook. Also, since it's a listening only device, there's no risk of being overheard while breathing heavily.

    --


    "Do the Right Thing. It will gratify some people and astound the rest." - Mark Twain
    1. Re:You don't need a phone to listen in.. by Anonymous Coward · · Score: 0

      If your listening device uses capacitive coupling, then there's no current drain to draw down the nominal 50 volts across an on-hook POTS line. I take it you failed your engineering courses and now work in IT instead?

    2. Re:You don't need a phone to listen in.. by mollymoo · · Score: 3, Insightful

      Capacitors don't pass current at DC, but they will pass AC current. An analogue signal (which POTS is) is by definition AC. What you need is high impedance. Any old op-amp will have an input impedance of 10^5 ohms or better (often an order of magnitude better), which would cause a negligible voltage drop and be virtually undetectable.

      --
      Chernobyl 'not a wildlife haven' - BBC News
    3. Re:You don't need a phone to listen in.. by Em+Adespoton · · Score: 3, Interesting

      Not recommended, but I used to use a 9VDC battery in a circuit to boost signal in the local circuit back when I was on a party line. It seemed to provide the boost needed and the telco never complained. I never did figure out why it worked, considering analog twisted copper does run AC.

  15. Voyeurs - mmmm, exciting! by Anonymous Coward · · Score: 0
    Still, if you're feeling paranoid, by all means check your phones. It's true, nosy neighbors could indeed be spying on you. Never underestimate the average person's voyeurism urges...

    Me: Honey, should I get the fish or the Lamb.

    Wife: It's up to you, dear.

    Well, no. YOu pick honey. I picked last time.

    Oh, I don't know. What do you think?

    It's up to you.

    No, you decide.

    Ok, fish.

    How about we go out?

    Ok. Where?

    Oh, I don't know. What do you think?

    Thai?

    No, we jut had that. How about Mexican?

    Well, but you know we'll hit the Margarittas and you need to sleep. You have to work tomorrow.

    No, I'm off. You see, Judy and Sam chose these past couple of days but then decided that since their kids are visiting, they need these other days. So, I stepped up to the plate and....

    Then I heard this gun shot across the line. Apparently, the neighbor committed suicide for some reason.

    1. Re:Voyeurs - mmmm, exciting! by Ed_Pinkley · · Score: 1

      I laughed out loud at this. Were you tapping *my* phone?

      --
      "Long time listener, first time caller."
    2. Re:Voyeurs - mmmm, exciting! by Hoi+Polloi · · Score: 1

      When I was a kid the early cordless phones and cellphones could be picked up by the police/air traffic scanners of the day. The conversations were just about that exciting.

      Person 1: I don't have the tickets.
      Person 2: You sure?
      1: Yes
      2: I don't have them.
      1: Can you look on my dresser?
      2: Ok
      1: Find them?
      2: Wait a sec...yah, here they are.
      1: Can you meet me here with them?
      Me: (Sound of scanner being turned off)

      --
      It is by the juice of the coffee bean that thoughts acquire speed, the teeth acquire stains. The stains become a warning
    3. Re:Voyeurs - mmmm, exciting! by Anonymous Coward · · Score: 0

      I must say I find this transcript intriguing, but it doesn't make sense.. Judy and Sam caused your neighbor to shoot himself?

    4. Re:Voyeurs - mmmm, exciting! by aurispector · · Score: 1

      It wasn't mine. I'm pretty sure I'm not interesting enough to bother tapping.

      --
      I have mod points. The reign of terror begins now.
  16. Encrypted VOIP not secure... by bugnuts · · Score: 3, Insightful

    They recommend Skype, which encrypts its traffic.

    But the computer is even more vulnerable than a phone to bugs. Tons of malware exists that can "own" a computer, which has given rise to an entire new security market. A phone is easy to tell if it has a bug ... you can simply open it up and look at it. Computers not so much.

    It also recommends using a cellphone for confidential calls. Just make sure neither provider uses ATT.

    1. Re:Encrypted VOIP not secure... by WK2 · · Score: 2, Interesting

      I agree that recommending Skype for security is a bad idea, but for entirely different reasons. I consider my computer safe. Nothing is perfect, but my computer is much safer than the mess at the phone company. However Skype is not secure. It is not even open source. Just like people can do weird stuff at the phone company, they can do weird stuff at Skype. The creators have gone on record saying that the encryption code probably will not stand up to crackers over time.
      http://en.wikipedia.org/wiki/Skype

      --
      Write your own Choose Your Own Adventure. http://www.freegameengines.org/gamebook-engine/
    2. Re:Encrypted VOIP not secure... by Anonymous Coward · · Score: 0

      No 'encyption code' will stand up to hackers over enough time.

    3. Re:Encrypted VOIP not secure... by hey! · · Score: 1

      The problem is that computers are so darn useful, there's no way to make them so useful without making them useful for malware. The answer is, you build your own dedicated Skype phone that (a) only does Skype and (b) uses read only media for everything it can.

      Personally, I wouldn't worry about bugs planted inside a phone, except possibly of software variety. How long before this happens with a smart phone? It's much easier to tap the lines for analog phones.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    4. Re:Encrypted VOIP not secure... by Anonymous Coward · · Score: 0

      A phone is easy to tell if it has a bug ... you can simply open it up and look at it. Computers not so much. Except phones get more and more similar to computers.

  17. From your friendly phone guy. by Anonymous Coward · · Score: 2, Funny

    Just wanted to say thanks for these articles. Now every single one of our paranoid customers is going to call us up and demand an inspection of their line.

    I just want to get this off my chest for most people.... You aren't interesting enough to tap, nobody cares about your private business.

    1. Re:From your friendly phone guy. by BBandCMKRNL · · Score: 1

      Just wanted to say thanks for these articles. Now every single one of our paranoid customers is going to call us up and demand an inspection of their line. No problem. Since you no longer own the wires on the house side of the network interface, you can charge them an arm and a leg for the service. For the really clueless, you can offer it as an on-going service and charge them an outrageous monthly fee just like you do with your {snicker}, "wiring protection plan".
      --
      Without the 2nd Amendment, the others are just suggestions.
    2. Re:From your friendly phone guy. by Anonymous Coward · · Score: 0

      So the NSA isn't interested in the polynomial-time factorization algorithm I discovered yesterday?

  18. What a load of crap. by chill · · Score: 5, Informative

    The 80s called and their want their wiretapping tech back.

    This is great if you're worried about the neighbor kid listening in, but not for anyone serious. Wiretapping is done at the telco level and you can't tell you're being tapped. In the digital age there is no clicking, breathing, voltage drops or any other indication. There is a big long checklist when implementing a CALEA node for making certain there is no way the target can tell they're being monitored.

    --
    Learning HOW to think is more important than learning WHAT to think.
    1. Re:What a load of crap. by mollymoo · · Score: 1

      Only if your definition of "serious" only includes law enforcement or government. Industrial espionage is pretty serious and shady private detectives can't just wave a court order at the telecoms company, they have to do it the old-fashioned way. But as far as clicking and the like goes, it would take a pretty clumsily designed device to be detectable that easily.

      --
      Chernobyl 'not a wildlife haven' - BBC News
    2. Re:What a load of crap. by drinkypoo · · Score: 1

      These days major businesses (you know, people worth tapping) are bringing in a bigger interface for their phone system, or even using internet telephony. It's not a bunch of pairs of copper so much any more. I imagine it's not too hard to tap into something bigger (a PRI?) but IP telephony is regularly encrypted.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    3. Re:What a load of crap. by idontgno · · Score: 2, Insightful

      Well then thank $DIETY that business conversations never occur outside the secure premises of a place of business. Certainly, what manager, executive, or board member* would use a home phone line to conduct confidential business.

      Dang, I left my sarcasm tags at home this morning.

      *Yes, the link is not about phone tapping, it's about pretexting. But note that some of the target phone numbers were home phone lines. If someone can be troubled to illegally access your home phone records for a business investigation, it's only a difference of degree, not kind, to tapping that same home phone.

      --
      Welcome to the Panopticon. Used to be a prison, now it's your home.
  19. @CmdrTaco: it's worse than you think. by palegray.net · · Score: 3, Insightful

    Maybe I'm on the wrong track here, but I guess I assumed that wiretapping now happened in secret rooms at the telco, and not by affixing something physically to a wire in your home, but I'll definitely be aware next time I hear a stranger breathing next time I'm stuck on hold. The type of surveillance you describe is indeed occuring, but it's not particularly selective in many cases. What's concerning is the fact that wiretapping occurs a lot more than people realize, for a variety of reasons, by private and public sector parties. As I'm sure you're aware, physical access is rarely required to accomplish the task these days.
  20. It doesn't have to be a government by thepacketmaster · · Score: 1
    "Maybe I'm on the wrong track here, but I guess I assumed that wiretapping now happened in secret rooms at the telco, and not by affixing something physically to a wire in your home."

    Wiretapping might happen in a telco if it was a legitimate government operation. If it's a rogue operation, a private investigator or just some stalker, they won't be using the telco company to do it.

    --

    --

    Luck is just skill you didn't know you had.

  21. WTF?? by f8l_0e · · Score: 4, Interesting

    The article also links to this product. They never had toys this fscking cool when I was a kid.

  22. Sounds like... by Muad'Dave · · Score: 1

    Sounds like a DIY one-way ticket to gitmo, if you ask me.

    --
    Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.
    1. Re:Sounds like... by drinkypoo · · Score: 1

      Sounds like a DIY one-way ticket to gitmo, if you ask me.

      Well, they just instated Habeas Corpus at gitmo... and if they declare you to be a terrorist or enemy combatant, you can lose it here... And besides, isn't waterboarding similar to a spa treatment? You can catch up on your R&R and work on your skin at the same time!

      Just hope you look good in orange...

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    2. Re:Sounds like... by lastchance_000 · · Score: 1

      gitmo is reserved for people the feds can't charge with an actual crime. This activity will send you to federal "pound-me-in-the-ass" prison.

  23. if you want to speak to someone in private by circletimessquare · · Score: 1, Insightful

    go walk with them on a beach. if this seems like too much effort, then whatever it is you have to talk about isn't that important to you, and therefore not worth the effort to ensure its privacy

    if you are upset at your government spying on you, then what strange notion of yours convinced you that an expansive public network would have no spying on it? i'm not talking about the government passing this law or that law about surveillance, i'm talking about the surveillance that woudl happen anyway, regardless of the laws. duh. which brings us to:

    the creeps and slimy types interested in spying on other people's conversations. congratulations, you are as bad as the government who spies on people, because your motivations are certainly no better than their's

    so this article sucks, in three different ways:

    1. the lazy and indolent who don't want to ensure their privacy by just talking face to face in an obscure place
    2. the naive and stupid, who somehow believe it is possible to have a network free of government intrusion, anywhere in the world, regardless of any laws
    3. the evil and creepy, who actually want to listen in on other people's conversations, never mind what the government is doing

    this whole article is a loser's ball

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:if you want to speak to someone in private by Beryllium+Sphere(tm) · · Score: 1

      >go walk with them on a beach.

      Leaving your cell phone behind, or pulling the battery out, if you might be the target of a motivated eavesdropper.

  24. There we go, no land lines for three area codes... by DRAGONWEEZEL · · Score: 1

    due to a blotto box!

    --
    How much is your data worth? Back it up now.
  25. Beige boxing: a blast from the past! by Anonymous Coward · · Score: 2, Informative

    You mean there's a device you could attach to a phone line to listen to a call? Amazing!

    For people in the know, there's an easier method to listen in on calls which is only detectable by the phone company: a Direct Access Test Unit or DATU. Find one of these "secret" numbers on the exchange your victim is on and you have the ability to snoop on their calls using the phone company's own test equipment. Messing with these numbers is also a very quick way to go to jail, but you sorta run that risk with an illegal wiretap anyway (unless you work in the Executive branch).

  26. Wireless phone = more fun by Chyeld · · Score: 5, Funny

    Couple of years ago, one of my neighbors narced on me because they thought I was playing video games too loud. This led to me getting a set of wireless headphones to listen to TV with.

    It completely surprised me the first time I put them on and couldn't get them to tune into the TV's transmitter because all the channels were full of wireless phone conversations.

    Sadly, none of my neighbors have any secrets worth listening to. And even worst, most of them seem to have no issues with taking the phone into the shitter with them :/

    In revenge, I've hooked up the transmitter to a cheap dvd player and leave anime porn running on a loop just before going to work, every few days....

    1. Re:Wireless phone = more fun by apparently · · Score: 4, Funny
      In revenge, I've hooked up the transmitter to a cheap dvd player and leave anime porn running on a loop just before going to work, every few days.

      But at the end of the day, you're still a dude who owns anime porn. FAIL.

    2. Re:Wireless phone = more fun by damn_registrars · · Score: 1

      In revenge, I've hooked up the transmitter to a cheap dvd player and leave anime porn running on a loop just before going to work, every few days
      Be careful not to leave the porn running too loudly, or you may find yourself knowing your neighbors a little more than you wanted:
      loud porn consequences.
      --
      Damn_registrars has no butt-hole. Damn_registrars has no use for a butt-hole.
    3. Re:Wireless phone = more fun by Anonymous Coward · · Score: 0

      That statement seems to indicate that you don't own any anime porn, which I don't believe coming from a slashdotter.

      BTW my captcha is 'Congress'

  27. possible != likely by petes_PoV · · Score: 2, Insightful
    Even if someone did try one of these amateurish techniques, they are unlikely to come up with anything they can use against you. Apart from the fact that most people simply aren't that interesting, do you really care if they hear you talking to Aunt Ethel. Most people use their mobile phones for any discrete communication - far less chance of someone in your own house picking up an extension, or hitting redial.

    This is old information which didn't ever work properly and is increasingly irrelevant today.

    Coming up next: how to get free long-distance by whistling down the phone ...

    --
    politicians are like babies' nappies: they should both be changed regularly and for the same reasons
    1. Re:possible != likely by Beryllium+Sphere(tm) · · Score: 1

      Your credit card number, if you still buy things over the phone. Somebody malicious could do worse things with your credit card number than just running up your bill.

      If you're in a position where someone might feel motivated to spy on you, for example being a spouse who's constantly "working late" or a reporter publishing damaging leaks, then you probably do have something to lose from having your privacy violated.

      Then there's the whole matter of principle. If I found a camera in my shower I'd be pretty steamed (pun intended) even though my showers are not really something that could be used against me.

  28. Yes, it is done at the telco by rob_osx · · Score: 2, Informative

    As a embedded software developer at a major telco equipment manufacturer I can verify that when the government wants a wiretap, they can do it easily at the telco. Several times telcos came to us and said "the government has asked for a wiretap how can we use your equipment to comply?" The process to do the wiretap was the same used to setup a conference bridge, which digitally duplicates the DS0 or T1. The government could then get a digital copy of all voice/data of the lines.

    1. Re:Yes, it is done at the telco by SaDan · · Score: 1

      I was wondering when someone would say something about digital switching.

      No way to detect that someone is listening in on your conversation if they're just duplicating 0s and 1s.

      I used to work for a company that basically made huge wiretap systems for digital telephone switches for call centers. Perfect recordings every time, zero call quality issues.

    2. Re:Yes, it is done at the telco by rob_osx · · Score: 1

      Perfect recordings every time, zero call quality issues. Exactly! I always laugh when a TV show or movie shows a security person entering the room with a black box and waving it around the walls and phones to verify it is a "secure" location. Duplicating data at the switch is undetectable (unless you have a snitch at the telco). Or the other laughable TV or movie moment is when a black van is parked outside a location with a reel to reel tape recording conversations. Who uses analog to record such stuff? Let alone reel to reel tapes. Most eavesdropping is done remotely and digitally.
  29. Who remebers the U5 testmode on Motphones? by Sabz5150 · · Score: 2, Insightful

    Remember how easy it was to listen on conversations over cellular phones back then? A piece of tinfoil or a soldered wire (some even allowed you to enter this mode via keypad) was all you needed to listen in on conversations. Not that I did any of this stuff... not me, no sir.

    --
    "Who modded this informative? Whoever it is must've been smokin' some of that martian pot!"
  30. When I was young... by __aagmrb7289 · · Score: 3, Funny

    I remember when I was younger, going around with a handset with roach clips at the end of the wire, opening phone boxes and plugging in. It was always a bit of a surprise when we tapped an active line, but MAN! So easy to do. I don't know if things are still setup the same way these days - I know the phone boxes around here are locked - not sure if the same key opens all of them anymore, but yeah - easy to tap a phone line? Sure, as long as you don't mind sitting in the bushes! I'm sure there is technology that can make it easier than that, these days.

    Oh, the above story? Not me, of course. When I say I, I'm talking about someone else I heard stories about, of course. I'd never do anything remotely approaching illegal, such as making long distance phone calls on other people's lines. That's crazy!

    1. Re:When I was young... by Sabz5150 · · Score: 3, Funny

      going around with a handset with roach clips at the end of the wire You beige boxing pothead :)
      --
      "Who modded this informative? Whoever it is must've been smokin' some of that martian pot!"
    2. Re:When I was young... by nweis · · Score: 1

      I'm sure there is technology that can make it easier than that, these days. I have a tone generator/amplifier probe kit for testing and locating cables. You connect the tone generator to the cable you want to test, then move the hand-held probe over the cable. If everything is working properly, the probe will pick up the tone and let you hear it on the built-in speaker.

      As an experiment, I tried using the probe by itself on my phone box while a friend was using my phone. I could hear the conversation perfectly through the probe. Mind you, I didn't open the box, I just held the probe near it. With a set of headphones, this thing would be a very quick, convenient, and easy-to-use phone tap. Hypothetically, of course.
  31. DIY wire tapping? by Thelasko · · Score: 4, Funny

    Why would I want to wiretap myself?

    --
    One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    1. Re:DIY wire tapping? by dkleinsc · · Score: 1

      You may not want to tap your own conversations, but you might want to tap your home phone to catch your spouse arranging for a tryst with someone else.

      --
      I am officially gone from /. Long live http://www.soylentnews.com/
    2. Re:DIY wire tapping? by Anonymous Coward · · Score: 0

      I have a split personality, you insensitive clod!

    3. Re:DIY wire tapping? by Anonymous Coward · · Score: 0

      Maybe you've been up to something you're not aware of. You'll never know unless you start monitoring your every move.

  32. flakey cell phone system... by airdrummer · · Score: 1

    just the other day, i called my wife cell2cell just as she was accessing her voicemail...i could hear her v.m. prompts:-( verizon sux...

  33. SW Radio can do this by Anonymous Coward · · Score: 0

    I eavesdropped one of my family member's conversation using a small SW radio (it was a cordless phone.)

  34. Listen for breathing??? by gatkinso · · Score: 4, Funny

    That won't help me: all my calls consist of heavy breathing.

    --
    I am very small, utmostly microscopic.
  35. Wow, now I'm scared! by Anonymous Coward · · Score: 0

    From now on, I'm just gonna use my wireless!

  36. More useful by Thelasko · · Score: 2, Informative

    Why only phone conversations, when a laser microphone can listen in on all conversations. They are also easy to build.

    --
    One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    1. Re:More useful by hesiod · · Score: 1

      They can also be pretty obvious, and require a good angle for reflection off the window both vertically and horizontally. So no 2nd story windows will work, unless you are in a building immediately opposite with nearly-parallel windows.

      Still, neat idea.

  37. Rampant paranoia??? by Vexler · · Score: 1

    First /. has the confession of a wi-fi thief who steals from his neighbors, and now we get a DIY guide on wiretapping.

    Obligatory quote from "Spy Game":

    Secretary: Feeling a little paranoid on our last day?
    Muir: When did Noah build the ark? Before the rain. Before the rain.

  38. stop glossing over Skype's problem by Sloppy · · Score: 3, Interesting
    Countermeasure suggested by article:

    Use an encryption VoIP service like Skype: Skype is an especially difficult service to tap, because of its encryption strategy. Slate reporter David Bennahum writes that "the company has built in such strong encryption that it's all but mathematically impossible with today's best computer technology to decode the scrambled bits into a conversation." You're more protected with this system.

    I sometimes feel bad about flaming Skype. They really are more resistant to eavesdropping than most everything else, and it's nice they used AES256. They almost got it right.

    But saying it's mathematically impossible to crack 'em is bullshit, because Skype's design is flawed (in at least one way that we know of -- and there's a lot we don't know about it, because it's closed and hasn't been really audited by crypto-nerds -- that's Skype first problem). AES256 is useless if the key itself has been compromised by MitM, and Skype's design allows that (that's Skype's second problem). Skype depends on a central server to introduce identities to one another, and that central point is potentially subject to compromise (or coercion). There's no reason VoIP users can't (in many cases, at least) cert each other directly, but unfortunately, that's not how Skype works.

    Skype can be tapped, and all this talk about how its heavy crypto prevents that, is a smokescreen. AES is believed to be a strong link in this chain, but don't forget that we're talking about a chain.

    --
    As copyright owner of this comment, I authorize everyone to defeat any technological measure which limits access to it.
  39. STU Phones? by lbgator · · Score: 2, Interesting

    The Government avoids spying by using STU phones. If tapping stays in the news, I wonder if projects like OpenMoko will incorporate similar techniques. It's good enough for gov't TS - so it is probably good enough for me chatting with my friend about what to do this weekend. It would only be a matter of time before cracking these streams would be easily doable, but at least there would be a small barrier to unfettered access.

  40. Just get a freaking Bearcat scanner and scan... by Anonymous Coward · · Score: 1, Interesting

    ... from 30 to 50 MHz. Then scan some of the higher ranges.

    Gotta love mixing old and new technologies. It's amazing how many people enter their credit card info into cordless phones. Baby monitors are also easy to pick up. Most conversations aren't worth listening to, though.

    1. Re:Just get a freaking Bearcat scanner and scan... by Anonymous Coward · · Score: 0

      most cordless phones do not broadcast openly anymore - you can not eavesdrop on them w/a plain jane scanner anymore - trust me - I tried! :-)

  41. My Conversation with the NSA by SiriusRegalis · · Score: 2, Interesting

    About a year after 9-11, I was talking on my phone with my wife. Now, to really understand this story, you have to know that my wife is from Iran, her father was a former General or the Air Force there, and she knows multiple folks who had fairly high positions at one time in the government. And she calls home all the time. We spend 50-60 hours a month connected to Iran via phone.

    So I'm sitting in a bookstore, and she calls. Right in the middle of the call there is a strange squeaking noise, reminiscent of digital audio "static" noises, sort of a cross between a cd skip and a modem. Sudden it ends, and we are no longer on the phone alone. Somehow our conversation was crossed with another cell phone conversation.

    The strange part is this. The other folks now joined to our conversation were also from Iran. They were speaking Persian.

    After about 30 seconds or mass confusion, the call went dead. For about 5 minutes my wife's phone and mine refused to connect out to make a call. Full signal, no access. When we finally got back in contact with each other, she told me that the other people on the line were trying to meet at a restaurant on the other side of Dallas. One had just landed at DFW from Frankfurt, on his way home from Iran. She understood them, I don't know the language.

    Now, what are the chances of 4 mobile phones, separated by 20 miles a piece, suddenly crossing conversations at the servers, and being the same fairly limited ethnic/nationality group that just happens to be on the "Axis of Evil" list?

    I tell this story to my freinds under the title "My conversation with the NSA" Since then it is a running joke for my freinds to randomly yell "bomb", "assassinate", "Jihad" and "Mohamed" while talking to me on the phone.

  42. practical application---need help! by Anonymous Coward · · Score: 0

    How can I intercept somebodys cell phone signals? Me and my crew are going to grow rip a local drug house, but we want to make sure we know how many people are there and jut find out more info in general about their operation etc. These are pretty low level dealers, they're strapped, but I doubt any one of them knows how to use a gun well (2 of us are ex-IRG,1 was training to join Mossad, and the rest are just decent with guns.) They also have a wireless surveilance system, is it possible to intercept that with a wireless laptop and no hacking skill?

  43. Perfect for nosy nerds like me by Anonymous Coward · · Score: 0

    This is cool. I'm going to wiretap my sister, just for fun. ;)

  44. Who's Interested In What You're Saying? by Illbay · · Score: 2, Insightful
    You might be surprised. The obvious culprit is the government, but consider...

    There have been numerous instances of "terrorist sympathizers" who hunt around online for people who say things they don't like, about their religion, their objectives, etc. They attempt to shut the blog down, even to discover the identity of the blogger to cause further trouble.

    Can you imagine if this grew to further proportion, where you would be in danger of being "discovered" by some amateur terrorist or terrorists, who decided to make your life a living hell, or even to cut it short?

    Sure, you had Theo van Gogh killed because he made a film that "they" didn't like, but what if they start aiming a bit "lower" on the food chain, start cyberstalking and tapping the phone lines of some guy who's an outspoking blogger or letter-to-the-editor afficianado?

    How do you protect yourself at that level of obscurity?

    --
    Any technology distinguishable from magic is insufficiently advanced.
    1. Re:Who's Interested In What You're Saying? by elucido · · Score: 1

      You might be surprised. The obvious culprit is the government, but consider...


      There have been numerous instances of "terrorist sympathizers" who hunt around online for people who say things they don't like, about their religion, their objectives, etc. They attempt to shut the blog down, even to discover the identity of the blogger to cause further trouble.


      Can you imagine if this grew to further proportion, where you would be in danger of being "discovered" by some amateur terrorist or terrorists, who decided to make your life a living hell, or even to cut it short?


      Sure, you had Theo van Gogh killed because he made a film that "they" didn't like, but what if they start aiming a bit "lower" on the food chain, start cyberstalking and tapping the phone lines of some guy who's an outspoking blogger or letter-to-the-editor afficianado?


      How do you protect yourself at that level of obscurity?

      Exactly, it's the terrorists who we should be worrying about. They DO want to know about us for obvious reasons.

  45. Reminds me of an answering machine that intercepte by Anonymous Coward · · Score: 0

    This old answering machine (back when tapes were common) used to randomly pick up neighbors' entire phone conversations on occasion. You'd know when you came home and the tape was full. It later died from a lightning storm, and I never did figure out why it did what it did.

    It may have been a case of new and old technologies clashing as well.

  46. Um, hello? Our conversations put everyone to sleep by RexDevious · · Score: 1

    If we talk about our jobs to anyone who doesn't have the exact same job, it only takes like 5 minutes before their eyes glaze over. Even if they used to have the same job. That's why we make the big bucks - a very, very small percentage of the population find the details of our industry interesting enough to simply stay awake through, let alone learn.

    Same goes for me. If I'm too pumped up from a programming breakthrough to get to sleep, I'll ask my Engineer or Project Manager friend what they did that day. Zzzzzz.

    The only people who could successfully tap our phones would be people who *wanted* to do our jobs, but weren't good enough at them and had to settle for eavesdropping in on us. My guess is, even though they could stay awake for it, the bulk of it would be way over their heads.

    It's the equivalent of having horrible credit and no money to protect yourself against identity theft. Just make all your phone conversations lethally boring. I'd bet that Al Quida could probably get away with anything over the phone if they only recruited people at Star Trek conventions and Hannah Montana concerts. But no one's written an Arabic to Klingon translation dictionary.

  47. A little knowlege ... by Zero__Kelvin · · Score: 1

    Have you ever heard the expression a little knowlege is a dangerous thing? Your clue should have been the definition of the word duplex.

    --
    Guns don't kill people; Physics kills people! - John Lithgow as Dick Solomon on Third Rock From The Sun
    1. Re:A little knowlege ... by Thelasko · · Score: 1

      I read your post. It didn't tell me anything I didn't already know. I was referring to the speaker acting as a microphone. Take apart an old phone and switch the speaker and the microphone and place a call. It will still work fine because the duplex coil determines which one is the speaker and which one is the microphone, not the nature of the devices. Without this isolation, assuming you are simply hooking a speaker up in parallel to the pair of copper wires, you will be able to hear the conversation, but the people you are listening to will be able to hear you.

      --
      One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    2. Re:A little knowlege ... by Thelasko · · Score: 1

      Wait, are you just arguing about what the device is called? Call it what you will, apparently Wikipedia calls both devices a hybrid coil. The point is, you need to isolate the speaker or it will act like a microphone.

      --
      One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    3. Re:A little knowlege ... by camperslo · · Score: 1

      An earpiece does act like a microphone, but has very low sensitivity. Most modern phones have a condenser microphone which is powered and uses amplification. Legacy phones had a carbon microphone, which varied resistance with the audio pressure. Those need current (DC) through them to produce an audio voltage, and also have MUCH higher output than dynamic (moving coil in magnetic field) types.

      The hybrid circuit in a phone really isn't about preventing the earpiece from acting as a microphone.

      Because of line losses, the audio that you send down a phone line is at a much higher level than what is coming in. If the earpiece were simply across the line, your own audio in the earpiece would be uncomfortably loud. The hybrid in a phone is effectively taking some energy from the microphone and using it to cancel some of YOUR OWN audio heard from the line. Since the level, phase, and response of your audio on the line changes with line impedance, the sound the hybrid provides of your own voice changes when the line does. Changes in how you sound to yourself provide a good clue to something going on.

      When someone adds a load to the line by picking up another phone, the caller will get quieter, but your own voice will seem louder (to you, not to the caller). Tonal characteristics will also change, perhaps becoming more hollow. A distant caller may get more echo from your end also. Of course someone that fully understands what's involved can use methods that won't load or unbalance the line keeping signal, noise and echo levels the same.

    4. Re:A little knowlege ... by Zero__Kelvin · · Score: 1

      "I read your post. It didn't tell me anything I didn't already know."
      So rather than mistakenly spreading misinformation, you are now loudly proclaiming your pride in intentionally spreading it. That's great. For the record, it turns out that the world doesn't revolve around you, and I actually don't care if you are proud to lack a clue. My post was specifically to prevent the viral spread of cluelessness. Embrace yours. It seems to really be working for you ;-)
      --
      Guns don't kill people; Physics kills people! - John Lithgow as Dick Solomon on Third Rock From The Sun
    5. Re:A little knowlege ... by Zero__Kelvin · · Score: 1

      "When someone adds a load to the line by picking up another phone, the caller will get quieter, but your own voice will seem louder (to you, not to the caller)."
      All in all, you are accurate in your post. However, bear in mind that if I, or anyone with a clue, is tapping your line, it will be with a high impedance tap. You won't hear a thing. You won't detect a thing. You'll need counter-survellaince electronics to detect it.
      --
      Guns don't kill people; Physics kills people! - John Lithgow as Dick Solomon on Third Rock From The Sun
    6. Re:A little knowlege ... by SirCowMan · · Score: 1

      A little OT, but in the same sort of ghetto-vein as "two tins on a string", a 9v bat. in series with two phones allows voice communications. No ring or anything, obviously. But it works.

      --
      !Equality through palindromes semordnilap hguorht ytilauqE!
    7. Re:A little knowlege ... by Lord+Flipper · · Score: 1

      The point is, you need to isolate the speaker or it will act like a microphone.

      Would switching the wire contacts on the speaker serve to reverse polarity (on these type speakers) and act as cancellation of any sound present in both 'mics' or speaker-acting-as? So that the direct voice in the actual 'microphone' would pass and the speaker (acting as a mic) would pass nothing? Or is there more to it than that? I'm asking, not a trick question. Just curious.

    8. Re:A little knowlege ... by unitron · · Score: 1

      Or is there more to it than that?

      Yes, there is more to it than that. If the speaker attached to the line by the person doing the wiretapping is physically right next to the microphone built into the handset of the telephone being tapped, then it would be picking up almost exactly the same audio as the telephone's mouthpiece and, depending upon polarity (which end of the speaker's coil is attached to which of the two wires of the telephone line), either would subtract from or add to the audio signal on the wire.

      However, someone who attaches a speaker to your phone line so as to be able to listen to your conversations is probably going to position it and themselves far enough away from you and your telephone that any soundwaves falling upon the speaker cone and causing it to act as a microphone won't be coming from you. I do not know if the voltage level produced by the speaker would be high enough for you or the person on the other end of your call to hear it, but which way around the speaker is connected to the line won't have any affect on that. If they connect that speaker *after* you have already begun the call you may well be able to hear a "click" and/or a volume drop due to an additional load being attached to the line.

      --

      I see even classic Slashdot is now pretty much unusable on dial up anymore.

  48. use the internet and an IP camera by lowerpower · · Score: 1

    Use the internet. Drop an IP camera with sound into the room, or in the ceiling tile, plug it in or use wireless onto the targets network. And if your using a Yoics enabled camera you don't have to know anything else, just go view/record from home. -lp

  49. It is called hentai! (=)/ by denzacar · · Score: 1

    You insensitive clods!

    --
    Mit der Dummheit kämpfen Götter selbst vergebens
  50. Don't need to read THAT by Anonymous Coward · · Score: 0

    Hmm how to wiretap...

    Step one, realize that electric current creates a magnetic field (i.e. phone wire).
    Step two, realize that a magnetic field induces current on a coiled wire
    Step three, realize you could wrap a wire around an iron nail, and tape it to a phone line.
    Step four, attach a battery to amp up the current to your earpiece.

    Voila, cheap easy wiretap that won't cause a noticeable signal degradation.

    If you're worried about someone tapping your calls you probably shouldn't be talking on a phone anyhow, just FYI.

  51. phreaky by Anonymous Coward · · Score: 0

    When I was in my rebel years (around age 13) I stumbled on textfiles.com

    After spending a few months enjoying their vintage erotica, I moved onto the anarchy and phreaking sections. One of the first things I did was build a beige box... I only used it once, to see if it worked, and some lady was on the line. She heard me and started getting weirded out.

    So I yelled "TAP DETECTED, PULL BACK PULL BACK" into the phone, hung up, and ran for it.

    There was a phone company van at that junction box later. Scared the crap out of me.

  52. Anyone in telecom.... by Flagg0204 · · Score: 2, Interesting

    Especially in field operations knows how insecure our phone pedestals (the little green and brown enclosers along your neighborhood roadds) are. Typically they use just a standard hex wrench to open. Dress in the right clothing, grab your butt set and go to town. Commercial bldgs are not much different. If you can talk the lingo and have a tool bet, its not hard to use a little social engineering to get into building telco closets. Having worked in telco for many years I can't count how many times I have been let into bldgs by just saying "I am with xyz telecom, and tenant abc needs us to work on their phone". 9 times out of 10 I don't have to present ID, they don't call the tenant they simply unlock the door. I have worked in telco closets where I have tapped onto a copper pair to hear lawyers discussing divorce cases with a cleint. Or a stock broker discussing financials with one of their clients.

  53. Police Scanners by dafing · · Score: 1
    I got a Police Scanner just last year, dont use it much at the mo, but it picked up an early Analogue Cordless phone conversation! It was a bunch of "thugs" talking about some "shitbox Chevrolet" and were talking about the rust in it and how crappy Japanese cars are and the usual inbred hick stuff.

    Really scary stuff since I had just gotten the scanner and wasnt 100% sure that THEY couldnt hear ME too! They wouldnt be too happy :P

    --
    --- ...or a new slashdot signature. Dear aunt, let's set so double the killer delete select all
  54. Call the police by dugeen · · Score: 1

    I like the article's advice to call the police if you're being wiretapped. 'Hello, police? My phone's being tapped!' 'Yes, we know.'

  55. It could be terrorists. by elucido · · Score: 1


    This means the terrorists can wiretap you.

    So yeah while you don't have anything to hide from your government, how about Bin Laden?

  56. Aren't interesting to who? by elucido · · Score: 1


    it's this kind of thinking that lead to the 911 attacks in the first place. You don't have to be very interesting,maybe you just happen to work in the world trade center or some important high paying career and that alone gives terrorists a reason to wiretap you.

    And believe me, they are out to get you and WILL wiretap you. I don't know why people think Iran, Syria, and whatever terrorist cells are only going to do dumb shit like ram planes into buildings but at the same time they give personal information out over the phone.

    Nothing stops the terrorists from monitoring and spying on us.