Mercor confirms data breach as attackers claim 4TB stolen
AI start-up Mercor confirmed a data breach in April 2026. The attackers claimed to have stolen 4TB of data. The actual extent of the leak and specific response measures have not been confirmed.
Key facts
- Affected organisation
- Mercor
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- Not confirmed
- Cause / method
- Not confirmed
- 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
- Mercor confirmed it had been caught up in a major security incident.
- Mercor's confirmation of the data breach and the attackers' claim to have stolen 4TB of data came to light.
4 related reports
Other incidents at Mercor
Mercor data breach raises fears of leaked AI company training data
Mercor said it had been hit by a cyber-attack linked to the compromise of the open-source LiteLLM project. Concerns were raised that the data breach could leak confidential training-related information of major AI companies. Meta temporarily suspended its work with Mercor following the breach.
Related reports: 2 · 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.