A threat actor published the phone numbers and account details of about 533 million Facebook users.
The leaked data included information that users posted on their profiles including Facebook ID numbers, profile names, email addresses, location information, gender details, and job data.
The database also contained phone numbers for all users, information that is not always public for most profiles.
Source: https://www.databreaches.net/phone-numbers-for-533-million-facebook-users-leaked-on-hacking-forum/
"id": "FAC2341251122",
"linkid": "facebook",
"type": "Data Leak",
"date": "04/2021",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"