4chan hack leaks internal data and knocks site offline
The online imageboard 4chan was hacked on 15 April 2025, leaking internal data and taking the service down. Access remained disrupted after the attack, and the outage and exposure of users' personal information continued until 21 April.
Key facts
- Affected organisation
- 4chan
- Incident type
- Data breach
- Occurred / detected
- 2025-04-15
- Scale of damage
- Internal data leak, service outage and exposure of users' personal information
- Cause / method
- Hacking
- Location
- United States
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
- 4chan was hacked, leaking internal data and taking the service down.
- Reports of 4chan's internal data leak and service outage continued.
- 4chan's outage continued after the hack, and the exposure of users' personal information was reported.
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Other incidents at 4chan
4chan hack raises fears anonymous moderators could be exposed
Internet message board 4chan was hacked. Concerns were raised that the identities of its long-anonymous staff could be exposed, and the specific extent of the leak and response measures have not been confirmed.
Related reports: 4 · last report →
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.