Data Leaked on Over 500 Million Facebook Users Occurred on 3 Apr 2021

In early 2020, a Facebook vulnerability was exploited by a hacker or group of hackers that allowed them to collect certain account data on over 500 million users. (Facebook says this vulnerability has been patched.) In early 2021, the hacker(s) established a database online that people could query for a fee. A few months later, all of the data was published for free:

All 533,000,000 Facebook records were just leaked for free.

This means that if you have a Facebook account, it is extremely likely the phone number used for the account was leaked.

I have yet to see Facebook acknowledging this absolute negligence of your data.

– Alon Gal (Under the Breach) (@UnderTheBreach) 3 Apr 2021

Details include:

Phone number, Facebook ID, Full name, Location, Past Location, Birthdate, (Sometimes) Email Address, Account Creation Date, Relationship Status, Bio.

Bad actors will certainly use the information for social engineering, scamming, hacking and marketing.

– Alon Gal (Under the Breach) (@UnderTheBreach) 3 Apr 2021

Users can check haveibeenpwned.com to see if their data was a part of this leak or many other major leaks as well.