Entities
Cathedral
Incidents involved as Deployer
Incident 17891 Report
Cybersecurity Firm Cathedral Reportedly Used AI Agents to Access Anthropic's Internal Business Systems
2026-10-26
Cybersecurity firm Cathedral reportedly used AI agents to exploit third-party software and access internal systems at AI developer Anthropic during invited security testing. Cathedral reported routes to personnel data and internal messages. Anthropic confirmed limited access to business systems holding contact details and basic account records, blocked access, and said Cathedral had not fully followed testing rules.
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Other entities that are related to the same incident. For example, if the developer of an incident is this entity but the deployer is another entity, they are marked as related entities.
Related Entities
Other entities that are related to the same incident. For example, if the developer of an incident is this entity but the deployer is another entity, they are marked as related entities.