Microsoft has kicked off a contest aimed at turning the tables on hackers by offering big money prizes for innovative tactics to foil cyber attacks.

Software that lets drivers unlock car doors and even start their vehicles using a mobile phone could let car thieves do the very same things, according to computer security researchers at iSec Partners.

The Black Hat Europe conference in Barcelona next week will feature a keynote on cyberwar from Bruce Schneier, and presentations on security flaws in Apple's Mac OS X and SAP's business software.

Barnaby Jack hit the jackpot at Black Hat on Wednesday. Twice.

The GSM technology used by the majority of the world's mobile phones will get some scrutiny at next week's Black Hat security conference, and what the security researchers there have to say isn't pretty.