8.5 Billion Passwords Leaked On Hacker Forum

A massive 100GB TXT file that contains 8.4 billion entries of compromised passwords found its way on a popular hacker forum. The leaked password compilation is dubbed RockYou2021 and has presumably been built from previous data leaks and breaches. This is the time to change passwords.

What to do if your password was leaked?

If you suspect that one or more of your passwords may have been included in the RockYou2021 collection, we recommend taking the following steps in order to secure your data and avoid potential harm from threat actors:

  • Use a personal data leak checker and leaked password checker to see if your data has been leaked in this or other breaches.
  • If your data has been compromised, make sure to change your passwords across your online accounts. You can easily generate complex passwords with a strong password generator or consider using a password manager.
  • Enable two-factor authentication (2FA) on all of your online accounts.
  • Watch out for incoming spam emails, unsolicited texts, and phishing messages. Don’t click on anything that seems suspicious, including emails and texts from senders you don’t recognize.


The previous largest ever mega-leak of passwords happened 4 months ago and involved 3.2 billion of email and password pairs.