What was exposed, when it happened, and which databases confirm it.
- accounts
- 7,160,849
- Breached
- May 29, 2013
- Last Update
- November 11, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
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What happened
In May 2013, the Russian-language hacking forum YouHack suffered a data breach that was later redistributed as part of a larger corpus of data. The breach exposed 107k forum members' email addresses, usernames, IP addresses and MD5 password hashes, most of which were unsalted. Forum posts also contained email address and password pairs belonging to other victims, bringing the total to 7.2M unique email addresses.
Compromised Info
- Email addresses
- IP addresses
- Passwords
- Usernames
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- HIBP
FAQ
What was leaked in the YouHack breach?
The YouHack breach exposed: Email addresses, IP addresses, Passwords, and Usernames.
When did the YouHack breach happen?
The YouHack breach was disclosed on May 29, 2013 and affected 7,160,849 records.
Am I affected by the YouHack breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the YouHack leak.