"RockYou" 2021 breach: 3.2 billion leaked passwords from multiple databases

As only 4.7 billion users utilize the Internet, that means RockYou2021 could actually involve the passwords of nearly twice the global population. Therefore, users should immediately check to see whether their passwords were affected by this leak. Users can check for password compromise using the website Have I Been Pwned or the CyberNews personal data leak checker. Threat actors can take advantage of the RockYou2021 password collection by combining 8.4 billion unique password variations with existing breach compilations of email addresses and usernames. The hackers could then use these credentials for dictionary and password spraying attacks against an unknowable number of online accounts. So far, research suggests that all of the passwords involved in this leak have non-ASCII characters between 6-20 characters each, with white spaces removed.

If you believe that one or more of your passwords may have been compromised you can take mitigation steps by immediately changing your passwords for all of your online accounts.

https://techxplore.com/news/2021-06-largest-password-breach-history-leaked.html