Just when you thought that by staying offline, your privacy on desktops / laptops wouldn't be invaded? What you wouldn't expect, is that even the mobile devices you carry around are not spared.Researchers demonstrated a technique that exploits the cell phone infrastructure to compromise cell user's privacy.
Turns out you don't even need a GPS to track a mobile phone user's whereabouts and glean her movements and interactions: Researchers have discovered a way to use information from the GSM mobile infrastructure to track down someone and even listen in on her voicemail messages and calls.
More details here.
netizens left a footprint.