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A comment on Samsung, Nokia say they don’t know how to track a powered-down phone. Parent comment

Re:Samsung, Nokia say they don’t know how to track a powered... by revelation on Tuesday November 12, 2013 @01:32PM (#6719765)
That's nice, but it is one hell of a side channel :)

Some people have been trying to implement detection for e.g. silent SMS or IMSI catchers in osmocombb (the first open source baseband), see [1], but there doesn't seem to be any recent progress.

1: https://opensource.srlabs.de/projects/catcher/wiki

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Re:Samsung, Nokia say they don’t know how to track a powered... by dobbsbob on Tuesday November 12, 2013 @02:19PM (#6720191)
I guess end to end encryption with Redphone or Ostel would defeat stingray/imsi catchers but no idea with type0 sms spam tracking. Use a faraday pocket :/

Chaos Computer Club reverse engineered some Qualcomm basebands to find them running in ARM supervisor mode with no NX bit. NSA must love that

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