Data breach notification service Have I Been Pwned can now be used to check if your personal information was exposed in yesterday’s Facebook data leak. Yesterday, a threat actor released the personal information for 533,313,128 Facebook users on a hacking forum, including mobile numbers, name, gender, location, relationship status, occupation, date of birth, and email addresses. The data was originally sold in private sales after being collected in 2019 using a bug in the ‘Add Friend’ feature on Facebook. Facebook had closed this vulnerability soon after it was discovered, but threat actors continued to circulate the data until it was released practically for free ($2.19)
Source: https://www.bleepingcomputer.com/news/security/how-to-check-if-your-info-was-exposed-in-the-facebook-data-leak/