Brandaktuell: Security firm Sophos posted a blog entry early Tuesday highlighting a new and potentially dangerous hack of Twitter's Web interface that's begun to make the rounds. Here's how it works, basically: By putting a bit of JavaScript code ("onmouseover&quot into a URL in a tweet, a user can cause a pop-up message to emerge when someone hovers a cursor over that link. Sophos notes that right now primary exploiters of the loophole are using it for "fun and games," but that it could potentially be used by spammers or purveyors of malicious code. It appears to work in both the redesigned Twitter Web interface that was launched last week as well as its predecessor. "Mouseover" hacks are not particularly complicated, and have been implemented in vulnerable e-mail clients for years. Sophos noted that many Twitter users are playing around with it but that the company hasn't put out an official reaction. Representatives from Twitter were not immediately available for comment. Quelle: Sophos highlights Twitter URL vulnerability | The Social - CNET News