A Las Vegas man called Spam King had faced federal fraud charges for allegedly luring Facebook users to third-party websites and collecting personal data for spam list.
He used to trick people into revealing their login details which he then used to access half a million accounts and used this to send spam to other Facebook users.
He also used to target the users with bogus "friend requests" for distributing spam.
Source: https://www.bbc.com/news/technology-34061931
"id": "FAC222223422",
"linkid": "facebook",
"type": "Cyber Attack",
"date": "08/2015",
"severity": "80",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"