Tor users at risk of being unmasked by ultrasound tracking

By: Danny Bradbury

A new type of attack should make Tor users – and countless dogs around the world – prick up their ears. The attack, revealed at BlackHat Europe in November and at the 33^rd Chaos Computer Congress the following month, uses ultrasounds to track users, even if they are communicating over anonymous networks. [Read more…]

Source: Naked Security