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posted by LaminatorX on Tuesday January 27 2015, @08:03PM   Printer-friendly
from the 3-2-1-Let's-Jam! dept.

According to the Defcon 22 presentation, the most straightforward way to hack / disable an alarm system is to:
Find out the frequency the alarm system transmitter uses from publicly available FCC documentation.
Get a software defined radio, set it to that frequency to jam it.
Periodically, for very short periods of time, stop jamming to overcome / trick anti-jamming functionality in the system.
For those interested in reading the original research, see Logan Lamb's Defcon 22 whitepaper and presentation.

[White paper]: http://media.defcon.org/DEF%20CON%2022/DEF%20CON%2022%20presentations/Logan%20Lamb/DEFCON-22-Logan-Lamb-HOME-INSECURITY-NO-ALARMS-FALSE-ALARMS-AND-SIGINT-WP.pdf

[Presentation]: http://media.defcon.org/DEF%20CON%2022/DEF%20CON%2022%20presentations/Logan%20Lamb/DEFCON-22-Logan-Lamb-HOME-INSECURITY-NO-ALARMS-FALSE-ALARMS-AND-SIGINT.pdf

http://ipvm.com/report/hack-adt-alarm-system

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  • (Score: 0, Offtopic) by Anonymous Coward on Tuesday January 27 2015, @08:39PM

    by Anonymous Coward on Tuesday January 27 2015, @08:39PM (#138624)

    Don't you just hate it when some (Windoze?) user puts white spaces in filenames so that each one expands to %20?

    -- gewg_

    • (Score: 2) by frojack on Tuesday January 27 2015, @09:19PM

      by frojack (1554) on Tuesday January 27 2015, @09:19PM (#138637) Journal

      Don't you just hate it when some (Windoze?) user puts white spaces in filenames so that each one expands to %20?

      Yeah, it can be annoying. (But its not unique to windowz).

      Its posix-ly correct.

      The actual %20 bit, (which causes no problems in the context for which it was intended - the web), but rather for the need to quote file names, or backslash every embedded space when dealing with them in 'Nix. Even in windows the spaces tended to break any batch files.

      --
      No, you are mistaken. I've always had this sig.
      • (Score: 2) by danomac on Tuesday January 27 2015, @11:38PM

        by danomac (979) on Tuesday January 27 2015, @11:38PM (#138681)

        Even in windows the spaces tended to break any batch files.

        Maybe early on, but newer versions of the shells in Windows (not just powershell) have autocomplete automatically put quotes around the file/folder name if there's a space in it. When using batch files, AFAICR Windows always supported encapsulating with quotes.

        • (Score: 0) by Anonymous Coward on Wednesday January 28 2015, @04:40AM

          by Anonymous Coward on Wednesday January 28 2015, @04:40AM (#138750)

          How does it know where the file name starts and ends? Sounds like it could be like all of the terrible msoffice 'you clearly wanted a space there' and 'sorry dave, i can't let you highlight that word without its trailing punctuation' stupidity.

          • (Score: 2) by danomac on Monday February 02 2015, @10:08PM

            by danomac (979) on Monday February 02 2015, @10:08PM (#140442)
            When you want a path, hit tab and it finds and encapsulates the first entry it finds. Keep pressing tab and it finds the next. And so on.
    • (Score: 0) by Anonymous Coward on Wednesday January 28 2015, @02:39AM

      by Anonymous Coward on Wednesday January 28 2015, @02:39AM (#138718)

      Yes%20I%20Hate%20It%20When%20They%20Do%20That.

    • (Score: 1) by poutine on Wednesday January 28 2015, @04:22PM

      by poutine (106) on Wednesday January 28 2015, @04:22PM (#138935)

      You're an idiot, it's %20 because that's what's required in a URL to be valid as ' ' is not a valid character in a URL. It has nothing to do with windows at all.

      • (Score: 0) by Anonymous Coward on Wednesday January 28 2015, @08:00PM

        by Anonymous Coward on Wednesday January 28 2015, @08:00PM (#138994)

        You're an idiot

        On occasion. Not this time.

        that's what's required

        It's not required at all.
        Smart people use a hyphen.
        Some folks use CamelCase.
        Some use an underscore (though that screws up Googleability as well).

        A proper OS/DE doesn't allow whitespace in filenames because it's a stupid notion (dreamed up by MICROS~1).
        Start with the fact that each one gets expanded to 3 characters.

        -- gewg_

  • (Score: 0) by Anonymous Coward on Tuesday January 27 2015, @11:23PM

    by Anonymous Coward on Tuesday January 27 2015, @11:23PM (#138677)

    My CB radio used to set off alarms. Although it was running 100 watts (Stock max is 4 watts) with 120% modulation.

    • (Score: 0) by Anonymous Coward on Wednesday January 28 2015, @08:04AM

      by Anonymous Coward on Wednesday January 28 2015, @08:04AM (#138794)

      Bad anon coward!

      Over-modulation causes harmonics that can pollute a lot of spectrum.