Details on recent Facebook hack Facebook says hackers accessed names, email addresses or phone numbers from about 29 million accounts as part of a security breach that the company disclosed two weeks ago. For 14 million of them, hackers got even more data, such as hometown, birth date, the last 10 places they checked into or the 15 most recent searches. Originally Facebook said 50 million accounts were affected, but that it didn’t know if they had been misused.