On Mon, Dec 9, 2013 at 12:59 PM, Matej Kovacic <matej.kovacic@owca.info> wrote:
... Unfortunaltely I have no idea how to implement detection of A5/x ciphering used or detection of silent SMS'es on Android. However, it is very simple on Osmocom platform.
carrierIQ is good for something ;) you're going to have to go ARM native (or ?) to observe use of A0 over GSM, since android.telephony.gsm screwed us.
I have also found out how to completely fake traffic data (data retention anyone :-)) ) and even how to insert arbitrary voice recording into eavesdropping database (in case police is eavesdropping to some mobile phone). Nice to know how "strong" could be computer generated evidence...
this came up on the cryptome list last week: camouflage, jamming, obfuscation are all useful techniques to apply against unwelcome observers. c.f. high power infra red LED camera dazzlers and LADAR jammers, etc. while equally effective on the cell bands, you'll want to be sure to check your 20 before emitting with gusto! ;P best regards,