Link: Twitter Security Flaw Today with OnMouseOver [UPDATED]
A security bug or flaw was discovered today on Twitter.com, and quickly became widely exploited. It let an exploiter craft a tweet in a certain manner, and when any other user moved their mouse over the tweet (without clicking), that unsuspecting user had the pre-programmed action executed on them, without their consent.
UPDATED: This post was updated twice, as the story developed, now also including a link to the explanitory article posted by Twitter.
by @Emerge2
