Account data from 2013 hack of Russian UHack forum recirculates online
A hack of the Russian cybercrime forum UHack in May 2013 exposed the email addresses, usernames, IP addresses and MD5 password hashes of approximately 107,000 members. The leaked material also contained email and password pairs belonging to other victims that members had posted, bringing the total to approximately 7.2 million unique email addresses. The historical breach data resurfaced and was added to HIBP on 11 November 2026.
Key facts
- Affected organisation
- UHack
- Incident type
- Data breach
- Occurred / detected
- 2013-05
- Scale of damage
- Account information for approximately 107,000 forum members was leaked. Including other victims' credentials contained in posts, the data comprised approximately 7.2 million unique email addresses.
- Cause / method
- Forum hack
- Location
- Russia
If your data was exposed
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
Timeline
- User account information leaked in the 2013 hack of the UHack forum was reported to have resurfaced.
- Further reports described the online recirculation of the data leaked at the time and the possibility that millions of people were affected.
3 related reports
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.