Tag Archives: cellphones

Researching text message community alert systems

By Benjamin Chodoroff | Published: April 20, 2011
Preface: I have to put this into a bit of current events context:  I spent the morning researching for this blog post, but was interrupted with news of an ACLU investigation into Michigan police officers breaking into citizen’s cell phones and the iPhone logging location data and mirroring it to your computer’s hard drive.  Both [...]
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GSM hijacking + VoIP + community wifi

By Benjamin Chodoroff | Published: August 1, 2010
Via HN: Chris Paget demonstrated a nifty little GSM hijacking device at Defcon: with a directional antenna and some clever OpenBTS-based software, he was able to provide an irresistably-strong signal for cellphones, which would switch off call encryption and then trunk the call onto a VoIP network. Sure, this is awesome for espionage, playing jokes on [...]
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