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RockYou2021 compilation leaks between 8.4 billion and 82 billion passwords

The RockYou2021 compilation is a single 100 GB file. (Image source: Markus Spiske)
The RockYou2021 compilation is a single 100 GB file. (Image source: Markus Spiske)
Someone has posted a 100 GB TXT file to a hacker forum that contains up to 82 billion passwords. According to a report, the number of unique entries may only be 8.4 billion, but it still significantly increases the risk of password dictionary attacks. All passwords in RockYou2021 are between 6 and 20 characters long.
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According to CyberNews, someone has shared a 100 GB text file that purportedly contained around 82 billion password entries. Shared on a hacker forum, the TXT file allegedly actually contains 8,459,060,239 unique entries. As CyberNews notes, the file is similar to the Compilation of Many Breaches (COMB) or breachcomp2.0 (COMB) that had 3.2 billion entries. Incidentally, the so-called RockYou2021.txt collates the passwords contained in the earlier COMB leaks.

It is unclear if the RockYou2021.txt file contains valid passwords, but its file size alone makes it challenging to trawl. CyberNews assumes that at least the passwords that were taken from breachcomp2.0 are, or were, legitimate. All passwords in RockYou2021.txt have between 6 and 20 characters; non-ASCII characters and white spaces have been removed. Ultimately, while RockYou2021.txt may not necessarily contain any new passwords. However, collating previous databases into one large one makes it simpler for hackers to search before attempting a password dictionary attack.

In our opinion, the publication of RockYou2021.txt underlines the importance of using unique passwords and, more importantly, two-factor authentication (2FA) or multi-factor authentication (MFA). Currently, CyberNews is updating its databases to account for the RockYou2021 compilation. CyberNews stresses the following regarding its personal data leak checker and leaked password checker:

We take our readers’ privacy extremely seriously. To protect your privacy and security, the data that you enter in the search field is hashed, and we use only this hash to perform a search in our database. We do not collect entered emails or passwords, nothing is logged when you perform a leak check.

Source(s)

CyberNews via TechRadar, Markus Spiske - Image credit

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Alex Alderson
Alex Alderson - Senior Tech Writer - 4316 articles published on Notebookcheck since 2018
Prior to writing and translating for Notebookcheck, I worked for various companies including Apple and Neowin. I have a BA in International History and Politics from the University of Leeds, which I have since converted to a Law Degree. Happy to chat on Twitter or Notebookchat.
contact me via: @aldersonaj
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2021 06 > RockYou2021 compilation leaks between 8.4 billion and 82 billion passwords
Alex Alderson, 2021-06- 9 (Update: 2021-06- 9)