When Mark Zuckerberg first built Facebook in his Harvard dormitory, he joked about the disregard that the social network's early users apparently had for their security.

“I have over 4,000 emails, pictures, addresses… people just submitted it. I don’t know why. They ‘trust’ me. Dumb f***s,” he told a friend.

As it turns out, Zuck’s own security credentials don’t live up to the mark: On Sunday night, both his Twitter and Pinterest accounts were broken into.

The hackers that accessed his account – a group called OurMine – did not reveal or tweet anything damaging; they simply posted messages revealing that the account had been accessed.