533 million Facebook users’ phone number has been leaked on a popular hacker forum for free.
The sold data included 533,313,128 Facebook users, with information such as a member’s mobile number, Facebook ID, name, gender, location, relationship status, occupation, date of birth, and email addresses.
According to Alon Gal, CTO of cybercrime intelligence firm Hudson Rock, it is believed that threat actors exploited in 2019 a now-patched vulnerability in Facebook’s “Add Friend” feature that allowed them to gain access to member’s phone numbers.
All 533,000,000 Facebook records were just leaked for free.
— Alon Gal (Under the Breach) (@UnderTheBreach) April 3, 2021
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. https://t.co/ysGCPZm5U3 pic.twitter.com/nM0Fu4GDY8
The top 20 geographic locations where members were exposed, as described by the threat actor, are listed below:
| Location | Number of users |
| Egypt | 44,823,547 |
| Tunisia | 39,526,412 |
| Italy | 35,677,323 |
| USA | 32,315,282 |
| Saudi Arabia | 28,804,686 |
| France | 19,848,559 |
| Turkey | 19,638,821 |
| Morocco | 18,939,198 |
| Colombia | 17,957,908 |
| Iraq | 17,116,398 |
| Africa | 14,323,766 |
| Mexico | 13,330,561 |
| Malaysia | 11,675,894 |
| United Kingdom | 11,522,328 |
| Algeria | 11,505,898 |
| Spain | 10,894,206 |
| Russia | 9,996,405 |
| Sudan | 9,464,772 |
| Nigeria | 9,000,131 |
| Peru | 8,075,317 |
