Hot on the heels of Firefox add-on Firesheep, which enables hacking into the accounts of mobile users of Amazon, Facebook, Twitter, Flickr, or Google, Katie Kindelan at sister blog Social Times reports on a new threat: Idiocy.

Idiocy was created by London-based software developer Jonty Warieing, according to Social Times, and it searches for users logged onto Twitter over unsecured Wi-Fi networks, hijacks their sessions, posts a Tweet warning the users that they are vulnerable, and links to a Web site explaining what happened.

For more, please see Kindelan’s post on Social Times.