Yahoo's cybersecurity chief says he's heading to Facebook to become its chief security officer.
Alex Stamos said in a Facebook post that he will be joining the social networking company on Monday. He succeeds Joe Sullivan, who departed Facebook Inc. in April to head to Uber.
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Stamos served as Yahoo Inc.'s chief information security officer for a little over a year, having started there in March 2014, according to his Linkedin account.
Shares of Facebook added 37 cents to $89.23 in Thursday premarket trading.