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How To Tell If Your Cell Phone Is Bugged

Lauren Weinstein writes to point us to his essay on the realities of using an idle cell phone as a bug, as a recent story indicated the FBI may have done in a Mafia case. From the essay: "There is no magic in cell phones. From a transmitting standpoint, they are either on or off... It is also true that some phones can be remotely programmed by the carrier to mask or otherwise change their display and other behaviors in ways that could be used to fool the unwary user. However, this level of remote programmability is another feature that is not universal... But remember — no magic! When cell phones are transmitting — even as bugs — certain things are going to happen every time that the alert phone user can often notice."

5 of 338 comments (clear)

  1. Easy way to detect a bugged phone by siliconeyes · · Score: 5, Interesting

    Like a poster on the earlier story commented, why not simply connect one of those flashy LED thingies to your phone? My mom has them, and every time she's on a call, or even on an incoming SMS, the LEDs go berserk!! They don't even need batteries and power themselves off the cellphone radiation. Pretty foolproof method, IMHO.

  2. That doesn't work, here's why by Anonymous Coward · · Score: 5, Interesting

    I have a pay-as-go phone they are not anonymous. In many places (e.g. Germany), you have to register your details to get it, in other places your purchase details are used from the credit card to register it.

    When I bought one with cash, just after I bought it, I received wrong number calls, but the people involved didn't seem to want to hang up like normal wrong number calls.

    Them: "Is Mark there?"
    Me: "I'm sorry, there's no Mark here, you must have a wrong number."
    Them: "I'm sorry, are you sure you're not mark"
    Me: "you have a wrong number"
    Them: "Oh my mistake, thanks again erm Mr erm...." pauses to see if you'll complete the sentence.

    This happened again and again and again, different scripts, but always a wrong number guy who just wouldn't go away. Until one day my wife answered and said my name.
    Her: "No this is ???????'s phone"
    After that I never received another wrong number call.

    Now I put that down to random chance, since I'm not worth spying on. But then my wife got a new pre-pay mobile, again she paid cash, and sure enough she got the same pattern of calls. We were talking about it yesterday, when the phone rang, and it was woman this time, who again was a wrong number, but didn't seem to want to hang up.

    Many different phone numbers used each time, we're building a list.

  3. er, tin-foil hat by Aryeh+Goretsky · · Score: 4, Interesting

    Hello,

    Just as an experiment, I tried placing my cell phone into an anti-static mylar baggy and the signal went from 100% to 40% (or five bars to two). Repeating this with tin foil with a small opening to see the LCD (about 1cm^2) reduced the signal to 20% (or one bar).

    I am wondering that if someone wants to have a private verbal conversation sans listeners on the cell phone, all they have to do is place their cell phone in metal box?

    This would seem much more convenient than having to pull the battery out, as well as reduce wear and tear on the contacts or thin plastics of today's cell phones.

    Perhaps someone who is a bit more familiar with electronics could explain whether or not a "tin foil hat" (or a metal box or foil bag, ala Enemy of the State) for a cell phone would work?

    Regards,

    Aryeh Goretsky

    --
    Dexter is a good dog.
  4. Re:Old, old news by Toby+The+Economist · · Score: 4, Interesting

    The calls I make from my home phone have the time of the call and the phone number called recorded.

    The calls I made from my mobile had the time of the call, my location and the phone number called recorded.

    All the websites I visit, have the domain name recorded.

    All the emails I sent have the time of sending and the receipient recorded.

    When I pay by credit card, the location, time and amount of the transaction are recorded.

    When I cycle into town, I go past about six cameras - I'm recorded by each one.

    All of this information is available to the State without any form of judicial oversight. A policeman on a whim could keep a very close watch on my life.

    So I'm not being paranoid here - this list *IS* the list of the monitoring conducted on all of us.

    I've committed no crime. I'm totally innocent.

    Why am I being monitored? why does the State have to keep records of who I talk to and when I talk to them and where I am when I talk to them? am I suspected of something? I'm not. So why? because I *might* do something? that's outrageous! and in fact it's proper tantamout to suspecting me of something - it is suspected that I *might* commit a crime, which is just a weaker version of we *do* suspect you comitted a crime.

    What people don't realise is that although the State has always recorded plenty of information on us, the game has changed because of computers. Computers plus surveillance isn't just more of the same; it's something utterly new and *different*.

  5. Re:The real answer to 'who are they'- Bill Collect by binarytoaster · · Score: 4, Interesting

    They're not necessarily bill collectors.

    I'm currently stationed overseas, and I got into a car accident while on leave in the States. The other party decided to sue for damages (I love living in America) and my insurance company played the "he's overseas serving the country, are you honestly going to force him to come back to deal with this?" card, the judge agreed, and delayed the trial until my tour's up, which at the time was more than two years.

    My wife has been getting calls on her cell phone (she's still in the states) that go like this:

    "Is binarytoaster there?" "...No, he's overseas." *click*

    It's honestly that fast from the way she puts it - they just ask if I'm there, and upon getting that answer they just hang up. Never say who they are, never leave a number, nothing. Been going on for at least a few months now.

    She was completely confused by why anyone would do this, as was I, until I remembered the lawsuit. So they might not be collectors, but they're still just as annoying.