Facebook admits 'most' of its 2bn+ users may have had public profiles slurped by bots

"It is clear now that we didn't do enough, we didn't focus enough on preventing abuse," Zuckerberg told reporters. "We didn't take a broad enough view of what our responsibility is, and that was a huge mistake."

Noting that the scraped profile information was limited to what was publically viewable, Zuckerberg told reporters "the vast majority of the data that Facebook knows is because you chose to share it."