Twitter 'onMouseOver' security flaw widely exploited

The Twitter website is being widely exploited by users who have stumbled across a flaw which allows messages to pop-up and third-party websites to open in your browser just by moving your mouse over a link. In a worrying development, messages are also spreading virally exploiting the cross-site-scripting (XSS) vulnerability without the consent of users.

Thousands of Twitter accounts have posted messages exploiting the flaw. Victims include Sarah Brown, wife of the former British Prime Minister.

Read more in my article at Naked Security.

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