Facebook shared personal information culled from its users' profiles with other companies after the date when executives have said the social network prevented third-party developers from gaining access to the data.
That's according to a report published Friday by The Wall Street Journal, which cited court documents, company officials and unidentified people familiar with the matter.
Facebook didn't immediately respond to a request for comment.
On Thursday, Facebook announced that a software bug made some private posts public for as many as 14 million users over several days in May.
The company said the bug automatically suggested that users make new posts public, even if they had previously restricted to "friends only" or another private setting.
Erin Egan, Facebook's chief privacy officer, says the bug did not affect past posts. She added that Facebook is notifying users who posted publicly during the time the bug was active to review their posts.
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