The hacking outfit OurMine has already been responsible for a few high-profile Twitter account takeovers, but the latest may be particularly embarrassing for the company.
Twitter CEO Jack Dorsey had his account briefly hacked early this morning, as OurMine tweeted out a link to its site and a message that it was "testing your security," along with a Vine clip that has since been deleted. (Engadget caught a look at the tweets before they were removed.)
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It's unclear what allowed Dorsey's account to be hijacked, although last month, Twitter took the step of locking down some accounts on the service after several million passwords — apparently from other services — were leaked. Similar hacks now include Google CEO Sundar Pichai and Mark Zuckerberg, but Dorsey is a particularly good reminder that not even the head of Twitter is immune.