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Documented

Researchers Use Anthropic's Claude AI to Breach OpenAI Systems

September 18, 2026
oecd:2026-09-18-2ef0View source ↗

What happened

A team of cybersecurity researchers from Hacktron AI used Anthropic's Claude AI to exploit vulnerabilities and gain unauthorized access to OpenAI employee ChatGPT accounts and a private GitHub repository. The breach, conducted as part of a bug bounty program, demonstrated AI's role in accelerating exploit development. OpenAI awarded a $6,500 bounty.

Reported impact

Affected parties
Not publicly disclosed
Harm type
Not publicly disclosed
Scale
Not publicly disclosed
Financial impact
Not publicly disclosed
Regulatory action
Not publicly disclosed

Classification

Organization
Not publicly disclosed
AI system
Not publicly disclosed
Industry
Not publicly disclosed
Country
Not publicly disclosed
Provider
Not publicly disclosed
Incident type
Not publicly disclosed

Relevant governance controls

Governance control mapping is not available for this record.

  • No controls mappedNot publicly disclosed

Control mapping is analytical. It does not state that any control would have prevented the incident.

Sources and evidence

OECD AI Incidents Monitor
Primary source
Researchers Use Anthropic's Claude AI to Breach OpenAI Systems
2026-09-18