Months-old US startup accessed Anthropic’s sensitive data in under 12 hours: Report
Anthropic said the researchers reached a limited set of sales, HR and IT systems and did not access Claude conversations or model weights.
- Cybersecurity startup Cathedral, founded by former DOGE staffers including Gavin Kliger, notified Anthropic that its AI agents breached the company's internal systems by exploiting vulnerabilities in third-party business software.
- Anthropic, a leading United States AI lab valued at $1.4 billion, raised $160 million from investors including Andreessen Horowitz and Sequoia Capital; Cathedral operates as an AI-driven cybersecurity startup focused on military applications.
- Cathedral's agents took less than 12 hours to access sensitive data including meeting transcripts and Slack messages; Anthropic confirmed researchers gained access to a "limited set" of sales, human resources, and IT systems.
- Anthropic accused Cathedral of violating its cybersecurity testing program rules by failing to disclose the full extent of its activity. The company confirmed no user conversations, source code, or AI model weights were accessed.
- The breach raised national security concerns in Washington, as officials fear Chinese hackers could exploit similar software vulnerabilities to replicate or surpass the capabilities of advanced AI models. The incident highlights enterprise software weaknesses affecting even leading organizations.
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AI agents accessed Anthropic's salary records and Slack messages in under 12 hours, report claims
Cybersecurity startup Cathedral reportedly used autonomous AI agents to access parts of Anthropic's internal business systems, including HR records and Slack messages. The incident has renewed concerns about vulnerabilities in third-party enterprise software, though Anthropic says its core AI systems, customer conversations and model weights were not accessed.
The Independent
The Independent (US)Anthropic hacked by AI startup in less than 12 hours
‘If a bunch of kids can do this, then potentially the Chinese aren’t far behind,’ says Trump official
Cathedral, founded by former members of DOGE, identified vulnerabilities in third-party business software used by Anthropic
How An AI Startup Hacked Anthropic In Just 12 Hours And Exposed Employee Details
A cybersecurity startup accessed Anthropic’s internal systems in under 12 hours using AI agents, exposing sensitive company data. The incident raises fresh concerns about AI security and agents bypassing access restrictions., Technology & Science, Times Now
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