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Wireless Security By The Gallon

prostoalex writes "The next effort to improve wireless security might involve a trip to Home Depot. Force Field Wireless sells buckets of aluminum and copped-laced paint designed to prevent the 802.11 packets from escaping the building, Information Week reports. The article also talks about the Firce Field's pitch to the government in order to improve the homeland security, but the only governments that got interested in anti-Wi-Fi paint were from the Middle East. According to the products page, they also sell the brush sets." Easier than wallpaper, or moving into an old house.

45 of 216 comments (clear)

  1. Works great on the scalp! by CyberGarp · · Score: 5, Funny

    New cheap replacements for all those tin-foil hats. Easy application!

    --

    I used to wonder what was so holy about a silent night, now I have a child.
    1. Re:Works great on the scalp! by ch-chuck · · Score: 2, Funny

      We've had replacements for tin-foil hats for some time now, not only more effective, but w/o the crackpot factor!

      --
      try { do() || do_not(); } catch (JediException err) { yoda(err); }
    2. Re:Works great on the scalp! by Walt+Dismal · · Score: 2, Funny

      I've tried this paint on my shorts, and I can report it almost controls unwanted emissions.

  2. Boy... by Tackhead · · Score: 5, Funny
    > Force Field Wireless sells buckets of aluminum and copped-laced paint

    ...talk about a TEMPEST in a teapot.

    1. Re:Boy... by Anonymous Coward · · Score: 5, Informative

      TEMPEST is the codename for a pseudo-mythical method of surveillance used to intercept data from electrical devices, such as your computer, by intercepting unintended EM emanations. To quote:

      "TEMPEST was "invented" in 1918 when Herbert Yardley and his staff of the Black Chamber were engaged by the U.S. Army to develop methods to detect, intercept, and exploit combat telephones and covert radio transmitters. The initial research identified that "normal unmodified equipment" was allowing classified information to be passed to the enemy through a variety of technical weaknesses. A classified program was then created to develop methods to suppress these "compromising emanations". However, the actual acronym known as TEMPEST was only coined in the late 60's and early 70's (and is now considered an obsolete term, which has since, been replaced by the phrase "Emissions Security" or EMSEC).

      TEMPEST and it's associated disciplines involve designing circuits to minimize the amount of "compromising emanations" and to apply appropriate shielding, grounding, and bonding. These disciplines also include methods of radiation screening, alarms, isolation circuits/devices, and similar areas of equipment engineering.

      TEMPEST disciplines typically involve eliminating or reducing the transients caused by a communication signal and the resulting harmonics. These signals and their harmonics could allow the original signal to be reconstructed and analyzed."

      Link:
      http://www.tscm.com/TSCM101tempest.html

      The idea is that EM fields generated my, say, your monitor can be intercepted and used to reconstruct what's being displayed on the screen.

    2. Re:Boy... by Detritus · · Score: 5, Interesting

      One of the early exploits for these techniques was to tap into the power lines supplying embassy code rooms and other sensitive areas. Teletypes and coding machines would generate electrical noise on the power line when they were being operated. With some clever analysis, it was often possible to determine what was being typed or printed on the machine. Other avenues of attack were the acoustic and RF emanations of the equipment.

      --
      Mea navis aericumbens anguillis abundat
  3. Home Depot by vasqzr · · Score: 5, Funny


    The next effort to improve wireless security might involve a trip to Home Depot. Force Field Wireless sells buckets of aluminum and copped-laced paint designed to prevent the 802.11 packets from escaping the building,

    Lowe's should consider carrying that product.

  4. TSS Covered It Last Month... by GTRacer · · Score: 2, Interesting
    ...In fact they covered an outhouse with it and sent their man in with a wireless laptop. His reception dropped but disn't die completely.

    Also, I hope they meant copper-laced paint, otherwise some police officers might want to speak with them. Hell, the bobbies may STILL want a word...

    GTRacer
    - It's lame joke day

    --
    Defending IP by destroying access to it? That makes sense, RIAA/MPAA. Go to the corner until you can play nice!
    1. Re:TSS Covered It Last Month... by RangerRick98 · · Score: 2, Funny

      copped-laced paint...Firce Field's pitch

      Perhaps someone was sniffing a little of this paint, hmmm?

      --
      "You're older than you've ever been, and now you're even older."
    2. Re:TSS Covered It Last Month... by bladesjester · · Score: 3, Funny

      Using wireless in an outhouse? Talk about your reception going to shit

      --
      Everything I need to know I learned by killing smart people and eating their brains.
  5. Good Old Fashioned Fix by mary_will_grow · · Score: 3, Funny

    I knew these cans of lead paint would find a use someday!!!!!

    --
    Why stick up for big business?
  6. Ok... wow... misread by Dirtside · · Score: 4, Funny

    At first glance I saw "Wireless Security By Gollum". I can't even begin to figure out what that might involve. The One Token Ring, perhaps?

    --
    "Destroy science and religion. Science would re-emerge exactly the same; but not religion." - Penn Jillette, paraphrased
    1. Re:Ok... wow... misread by SlinkyToad · · Score: 3, Funny

      Or maybe a Tolkien Ring network...

      -the Slink

      "One Ring to Rule them all..."

    2. Re:Ok... wow... misread by emc · · Score: 2, Funny

      Score: -1, Groan)

    3. Re:Ok... wow... misread by LuckyPhil · · Score: 2, Funny

      "Wireless Security By Gollum"

      New book: Hacking Wireless Security by Gollum -"What have you got in your packets???"

  7. What else does it block? by millahtime · · Score: 5, Interesting

    So, it blocks an 802.11 signal. Wouldn't this mean that cordless phones would be blocked also. What about cell phones or old fashioned radios?

    This might me more of a pain than a solution

    1. Re:What else does it block? by nrd907s · · Score: 4, Informative
      From the article:

      There are drawbacks to the paint. It doesn't just block wireless networks. In the home, it would block the one or two remaining TVs connected to rabbit ears. More important, it blocks mobile-phone signals.

      The company also makes a window film that cuts down on signal leakage: A 30-inch-by-25-foot roll is priced at $45.
    2. Re:What else does it block? by Kelerain · · Score: 4, Interesting

      Its true this may not be the best wifi security solution (ethernet anyone?) but it would be *great* for say, theaters. No more annoying cell phones going off durring the movies! There are other issues to deal with, such as liability (doctors on call etc) but as long as you posted a sign that explained as such, things should be alright. It would be a great solution, and much easier to apply than expensive pannels and such that have been tried before.

    3. Re:What else does it block? by Qzukk · · Score: 4, Interesting

      would be *great* for say, theaters. No more annoying cell phones going off

      I've heard cellphones that beep repeatedly to let you know you're out of service range.

      Of course, in a theatre situation, maybe that would remind the person to shut it off, or at least provide a homing beacon for those that want to shut it off for him before the movie starts.

      --
      If I have been able to see further than others, it is because I bought a pair of binoculars.
  8. Good old.. by Gorffy · · Score: 4, Funny

    Paranoia. The true mother of all invention.

  9. Well... by imsabbel · · Score: 4, Insightful

    As this "security improvement" only affects computers in specially prepared rooms, WHY THE FUCK use wireless at all? A nice Cat5 is 10times faster than wifi, and even more tempest-proof than a metal painted room.
    Not to mention that even to most fancy cable management system will be less work and cost than painting all walls+ceiling (and what about the floor if you arent in the basement?)...

    --
    HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
    1. Re:Well... by Marxist+Hacker+42 · · Score: 2, Funny

      What's to stop you from painting the shingles? Aesthetics don't matter- this stuff is probably gunmetal grey anyway.

      --
      SJW: a person who perceives an injustice, and while correcting it, commits a greater injustice.
    2. Re:Well... by rednip · · Score: 3, Insightful
      As this "security improvement" only affects computers in specially prepared rooms...more tempest-proof than a metal painted room
      No the special rooms mentioned in the article are the Faraday cage, with which they compare the effect. This is what happens when you skim an article, just looking for something to bitch about. The article clearly states that this paint is intended for entire buildings, for example (from the article):
      DefendAir would be an attractive option to protect an RFID-enabled warehouse, he says.
      Also
      More important, it blocks mobile-phone signals.
      Can you imagine the benifit of using it in the outside paint for a movie theater, or resturant. You whouldn't even have to use jammers (which whould bleed into the street and are illegal anyways) to achieve freedom from hearing only one side of someone's conversation.
      --
      The force that blew the Big Bang continues to accelerate.
    3. Re:Well... by Glendale2x · · Score: 4, Interesting

      As this "security improvement" only affects computers in specially prepared rooms, WHY THE FUCK use wireless at all? A nice Cat5 is 10times faster than wifi, and even more tempest-proof than a metal painted room.

      Using Cat5 over wireless is a massive security improvement in itself, also available from the Home Depot. Cable ends and crimpers are available too, and at a cost far less than the paint. I suspect the paint is for suckering in people who think 802.11 is the only thing there is. The rest of us who actually care and want to save some money will continue to run cables.

      Every time I see something about "wireless security" I always wonder why people spend so damn much money (like the paint) and effort (new encryption schemes) on it when if you really cared about security you wouldn't be using it in the first place. "Wireless security" is good to stop someone from casually using your access point, but is no substitution for real security and encryption.

      Even then, people pick stupid or easy to remember passwords for their base stations, or open the window of their wireless-defeating painted room, thereby making it all a moot point.

      --
      this is my sig
  10. Stating the obvious by tedtimmons · · Score: 2

    Paint not safe for painting on head.

    Can you put an RFID tag on a product such as this? What if someone painted over the RFID/antitheft tags with this paint?

    -ted

  11. Dong, Where is my automobile? by stratjakt · · Score: 2, Insightful

    Convincing consumers to take wireless security seriously has been harder. "They see it like tinfoil on your head," Wray says. "They think it's kind of paranoid."

    Uh, it is kind of paranoid.

    And it's surely no substitute for a robust encryption scheme.

    Since it's commercial in nature, how many modern offices can really do without cell phones and pagers?

    Oh, and 64 bucks seems ridiculously expensive for latex paint with aluminum and copper filings mixed in.

    This seems like one of those "theres a sucker born every minute" products, like monster cables, or green cd films to make your cds sound better.

    Then again, who needs Old Glory Robot insurance if the robots cant detect you inside your house!

    --
    I don't need no instructions to know how to rock!!!!
  12. ... Hmmmm ... by ninjagin · · Score: 2, Insightful
    I checked out the page and the concept seems pretty neat -- kinda like painting on your own faraday cage. I wonder how well it affects the color or application of the paint. The window-tinty film is also a pretty cool concept, too, though it looks like it'd cut down on a lot of visible daylight along with keeping your wifi in. I like my sunshine.

    The burning question I have (and hopefully a smarter-person-than-I can clue me in) is how is this going to affect my AM/FM/SW radio reception inside my house? It almost seems like a rooftop antenna would become a must-have, assuming that the blockage of signal would keep all those friendly informational radio waves from getting INTO my house.

    --
    .. pa-ra-bo-la, pa-ra-bo-la, 2 pi R, 2 pi R, where's your latus rectum, where's your latus rectum, 2 pi R
  13. Wrong idea by Marxist+Hacker+42 · · Score: 4, Funny

    FTFA:

    "It was my concept along with my colleague, Diane Lopez," says Wray, a former network engineer with Networks Associates. "We knew of people inundated with interference on their wireless systems. In fact, Diane, in her apartment, could find eight wireless networks around her. She needed to shield herself."

    No, she needed to stop wasting money on broadband and mooch off her neighbors.

    --
    SJW: a person who perceives an injustice, and while correcting it, commits a greater injustice.
  14. Legal to sell in some states? by ARRRLovin · · Score: 4, Interesting

    I'd like to see the MSDS(Material Safety Data Sheet) for those products. Adding heavy metals to non-commercial coatings can't be legal everywhere. I used to work in the retail coating industry (neighborhood paint store) and even just your standard bathroom paint is regulated heavily. So heavily it makes other EPA legislature look completely logical!

    --
    -Randy
  15. Re:Does this work at all? by stratjakt · · Score: 2, Informative

    Lead doesn't give you cancer, it slowly accumulates until it causes dementia, Alzheimers, or death.

    Check out the story of Sir John Franklin, who tried to lead an expedition in Canada to find the northwest passage, back in the olden days. They found the party dead, having abandoned their ship, but they took ridiculous items with them, like an old dresser, instead of food and supplies that could have kept them alive.

    The story goes they all went insane from the lead used in the canned food they were eating.

    --
    I don't need no instructions to know how to rock!!!!
  16. Environmental Effects by theycallmerenda · · Score: 2, Interesting

    What are the environmental effects of this type of paint? I would think that direct exposure to this paint (i.e. with no outer layer of nontoxic / latex) would be harmful. Boatowners use copper-based paints to keep barnacles from growing on the bottom of their hulls in saltwater. Designed to flake off over time, the paint is poisonous to sealife and highly toxic to humans. How safe can this stuff be? Do we really need more harmful metals dispersed in our environment?

  17. You have questions, I have answers. by FreeLinux · · Score: 4, Informative

    Q. Does it really work?

    A. Yes, to some extent. The metalic paint does effectively impede radio signals however, it is not 100% effective. Some signal may still leak through the paint also, untreated windows and doors will allow the signal to leak. None the less, signal propagation is greatly reduced by the paint, which was the primary reason for its development.

    Q. What about cordless phones?

    A. This paint will affect most radio signals including corless and cell phones, AM/FM radio, broadcast TV and more. The overall effect will vary depending on paint application quality, signal frequency and strength, as well as other factors.

    Q. Is this paint a health risk?

    A. Copper based paint, commonly used in marine applications, is a known health risk and environmental hazard. While there is little data available for aluminum based paints, there do not appear to be significant health risks at this time. This does not mean that there aren't health risks associated with aluminum based paints.

    1. Re:You have questions, I have answers. by z0rc · · Score: 2, Informative

      Copper is regulated in its use in California. It is not regulated Federally, but some other states probably regulate it. The primary reason copper is regulated is that it is fairly highly toxic to plant life, and in particular to marine life....Here is a link to a MSDS, http://www.agrium.com/uploads/Ultra_Yield_Copper_O xy_Sulfate_12_percent_MSDS14189.pdf [pdf sorry] scroll down to section 12, ecological information where it says ECOTOXICITY May be harmful to livestock and wildlife if ingested. Clean up all spilled material, especially where bulk fertilizer loading of equipment occurs to prevent animal exposure. Aquatic/Marine Toxicity: U.S. D.O.T.: This material is listed as a Severe Marine Pollutant. Slightly soluble. Slow release to watercourses may cause effects down stream from the point of release. These effects may be limited by recovery of spilled material if recovery is conducted immediately. Toxic to fish and other water organisms. If you wanted to build a serious faraday cage it seems to only be an OK way to go...replastering with chicken wire would be fantastic.

  18. Is it as good as Stucco and plaster? by Big_Al_B · · Score: 2, Interesting

    My buddy's house, with stucco out and plaster in, provides a very strong 802.11b-arrier. An AP in his neighbor's house (visible in a window) is only intermittently reachable from his den, standing by his own window, about 22 feet line-of-sight from the neighbor's AP.

    My neighborhood, a in a new development, is full of houses made from sticks, vinyl and wallboard. I can easily reach anywhere from 6 to 10 APs from just about anywhere in my house (and only 2 are mine.)

    1. Re:Is it as good as Stucco and plaster? by stratjakt · · Score: 4, Informative

      It's not the paster or stucco, but the metal lath to which the stucco and plaster are adhered to.

      If you ever see it installed, they (usually) first staple up a thick metal mesh, which holds the plaster in place. Wood lath was the status quo in the really olden days, before steel became cheaper than hardwood strips.

      Norm Abrahms goes wardriving in this weeks episode of This Old House!

      --
      I don't need no instructions to know how to rock!!!!
  19. OT: glowing letters by lawpoop · · Score: 2, Interesting
    Hey folks -

    A few years ago I had a metallic paint pen. If you burnt the paper that had markings from this pen on it, the ink would glow brightly for a brief time before going out. It was a neat effect, glowing words.

    Now I'm trying to re-create this effect for a film project, and I've had no luck. I've bought out the pen section at staples, tried various metallic paint pens, and none of them do this.

    The idea is to have the credits written on a piece of paper, totally unlit, so all you see is darkness. As the flame creeps across the page, the letters will glow as the flame hits them. How could I do this?

    --
    Computers are useless. They can only give you answers.
    -- Pablo Picasso
    1. Re:OT: glowing letters by lawpoop · · Score: 2, Funny

      Um, sure, is your email ac@slashdot.org?

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
  20. Good by Ed+Thomson · · Score: 2, Funny

    Finally I have a reason to paint over the windows to get rid of that pesky Sun.

  21. Too much *and* too little by rarose · · Score: 2, Insightful

    This is too little protection for the people who need it (i.e. corporate/government protection), so those folks will opt for more serious protection.

    This is too much protection for Joe Casual User who will pissed at bad cellphone reception, bad TV reception, bad coreless phone. Or downright ineffectiveness if they don't also paint the ceiling, floor and windows. (Note on business plan: Shit! Windows???!? What are we going to do about windows? )

    Thumbs down.

    --
    --Rob
  22. Other options by leighklotz · · Score: 4, Informative

    The Defend Air people don't give any data I can find on the dB-vs-MHz effectiveness of their product, but plenty of competitive technologies do. I wish they did, because I want to line my laundry room with the stuff! The washing machine makes a terrible racket in my radio.

    There's Hospital Quality shielding done with aluminum foil, and more serious shielding of both E and H fields for MRI machines. I won't even go into the RF-sealed doors...

    If you're concerned about magnetic fields, then Mu Metal is the stuff. Just don't bend any of the Hydrogen-annealed variety. You can get sheet and tape in small quantifies from these folks, who by the way also offer "Personal Protection Devices (silver-impregnated fiber baseball caps, not tinfoil hats, please) ...and their own copper paint which is startlingly more expensive than the DefendAir product...they even have the same window film that keeps out the sun, but also makes your cell phone not work.

    For sealing over the gaps, don't forget 3M 1181 Copper Tape, which features electrically-conducting adhesive, but only specifies 80dB isolation at 30MHz-1GHz.

    But my favorite so far is Metal Foam, which reminds me of the almost weightless foamed glass Aerogel that was a announced a few years ago... Foamed aluminum is available commercially in 2x2ft sheets from from Austria, Alulight. They claim 40dB isolation in the 2Ghz range and over 100dB to 140dB in the 10Mhz-1GHz range, plus excellent sound isolation, structural, and fire safety properties. What's not to like? Anybody know where the get this stuff in the US? Reade seems out of my range, but I'll ask them.

  23. Paradigm shift: Secure networks not shield them by SumDog · · Score: 2, Interesting

    This is astatine. Why in a technological age when we have so much control over protocols that we degrade ourselves to securing rooms by physical means. It's as retarded as wearing a tinfoil hat.

    Instead of blocking 802.11b/g frequencies with wall paint (along with cell-phones, radios and key-less car remotes) can't we use what's in place? You can design a router to restrict traffic based on hardware MAC address and design your DHCP servers to assign by MAC address. Create some scripts to synchronize your routing tables and DHCP configuration file with a single database, and you have a system to secure your wireless network.

    You can also use the WEP encryption, and if you're still uneasy about that with all the recent white papers that mention how to break it, make all your intranet servers with private information only accessible to the wireless subnets using secure protocols (https, imaps, pop3s, etc.)

    It's simpler, uses technology versus a metaphorical metal wall and cost a ton less.

  24. Re:Boy... (what is TEMPEST?) by RenaissanceGeek · · Score: 2, Interesting
    TEMPEST is a name associated with techniques to limit the amount of EM radiation emitted by devices used to handle sensitive information.

    It is a countermeasure to "Van Ek Phreaking", the blow-'em-away demonstration of which was a cart with a monitor and $100 worth of Radio-Shack parts that displayed the pictures that were on monitors in the curtained-off "non-disclosure-only" areas at a trade show, as it was wheeled by the booths.

    --
    What is the difference between a small revolutionary change and a large evolutionary change?
  25. Homeowners be very careful with this by Anonymous Coward · · Score: 2, Informative

    While the manufacturer claims the product contains no lead (that's because of lead paint laws), the concern would be the copper and aluminum itself.

    Asbestos was banned when fiberglass was available as an alternate solution to insulation. Fiberglass has been listed as a carcinogen in California. But I'll bet it won't be listed as a carcinogen in the rest of the US until a suitable replacement for it is found.

    That's how environmental law generally works. When you have a replacement, you ban the old stuff. With lead paint, as bad as it is considered today, it was considered a premium product in its heyday. It self cleaned (sun shines on it, develops chalky surface, the lead itself, rains, washes off the chalky surface), it is far more durable than the non-lead paints that replaced it, lasts longer, and has other desirable properties. One problem: the kids eat the paint chips, or far more common, play on the floor, put their hands on the lead dust on the floor, then put their hands in their mouths. End up with a high lead level in the blood, which migrates inside the bones long term, causing brain damage as they grow up.

    So lead was banned in 1960 in NYC housing and other areas, and banned federally in paint for housing in 1978. But was still allowed to be sold for 2 more years so the manufacturers wouldn't get stuck with a recall of stock on dealer shelves. What's the current situation? The lawyers are having a field day. The general procedure is, get the proof of blood test with high lead level result (mandatory blood-lead testing of children under 6 every year), attorney gets result, sends notice to property owner, notice says, notify your insurer that you received this letter of elevated blood-lead level poisoning, if insurance company is dumb enough to still be insuring you for lead coverage, immediate settlement offer, and dropping of homeowner insurance coverage (and resulting mortgage default for lack of property insurance).

    Sounds like a /. post, write letter, send to homeowner, profit!

    The manufacturer may tout the lack of lead. But copper is also a problem in the US. And aluminum should be a problem in the US, like it is a problem in Europe already. In the US (as probably many other countries), drinking water is tested not only for lead, but for copper as well. So copper entering the body is a problem. As for aluminum, it has been linked through studies on occasion to alzheimer's disease. That's why I avoid Rolaids and use Tums instead. And why I try to find (failing so far) anti-perspirants that don't contain aluminum. If copper and lead are problems, why not aluminum?

    Long term, this paint is likely to be a legal problem for the manufacturer, and any homeowner who uses it. And any homeowner who buys the house later. The manufacturer can simply move his assets elsewhere, declare bankruptcy and continue business under a new name. It is the homeowner who lacks the proper financial tools, financial ability to protect against lawsuits, and the knowledge to prevent this liability problem who is going to get screwed in the end. And the kids who are on the receiving end of the paint chips and dust that eventually will deteriorate and become ingested by many innocent kids.

    The instrument for surveying houses for lead paint costs about $20,000 with interest, is very expensive to maintain and keep working, and is difficult to possess under very restrictive licensing. Adding the ability to detect and survey aluminum and copper, without getting false postives on armored/metallic electrical wiring, copper pipes, and other false positives, fall within testing parameters established by governmental agencies is going to add tens of thousands to the cost. And that additional cost will be added to the survey cost to the homeowner, which is already at $250-$500 for an average 1 family house, and can run over $1,000 depending on how large the house is, and about $150-$200 per apartment when multiple apartments are done on the same day.

    1. Re:Homeowners be very careful with this by MmmDee · · Score: 3, Informative
      And why I try to find (failing so far) anti-perspirants that don't contain aluminum...

      fyi, Old Spice is aluminum free.

      --
      No man's an island, unless he's had too much to drink and wets the bed.
  26. Fire! by Zegnar · · Score: 2, Insightful

    So, what happens when the fire department run in, and their radios don't work?