AI startup Mercor confirms major data breach via LiteLLM supply chain attack
Mercor, an AI startup working with companies like OpenAI and Anthropic, confirmed a major data breach as part of a LiteLLM supply chain attack. The disclosure and response phase occurred between April 8-12, 2026. Attackers claimed to have leaked datasets, including Slack data, internal tickets, videos, source code, and database records.
Signal context
First seen: Apr 12, 2026
Last updated: Jul 3, 2026
Status: Public signal
Key points
- AI startup Mercor confirmed a supply-chain attack.
- Breach linked to LiteLLM exploitation.
- Attackers claimed to have leaked Slack data, internal tickets, videos, source code, and database records.
Signal analysis
BetaIt helps compare this signal with other published signals without treating the labels as final determinations.
Likely country: Location not provided
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data, Server or cloud data store
- 1 signal in the same sector
- 88 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Data Breach Roundup (Apr 3 - 9, 2026) - Privacy Guideshttps://www.privacyguides.org/news/2026/04/12/data-breach-roundup-apr-3-9-2026/Public source from privacyguides.org.
10 Data Breaches to Know About (April 2026) - Security Magazinehttps://www.securitymagazine.com/articles/102282-10-data-breaches-to-know-about-april-2026Public source from securitymagazine.com.
6 AI Security Incidents: Full Attack Path Analysis (April 2026) - Foresiethttps://foresiet.com/blog/ai-security-incidents-attack-paths-april-2026/Public source from foresiet.com.
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