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BY Chris Morris

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A cybersecurity firm run by former members of Elon Musk’s Department of Government Efficiency (DOGE) says it has broken into internal data and messaging systems at Anthropic. Perhaps even more surprising, though, is its claim that it did so in less than 12 hours.

The startup is called Cathedral, and it classifies itself as an AI-driven cybersecurity firm with a focus on military applications. In July, Cathedral closed a $160 million funding round that valued the company at $1.4 billion, with investors including Andreessen Horowitz and Sequoia Capital.

How Cathedral got inside Anthropic

Cathedral says it was able to penetrate Anthropic by taking advantage of vulnerabilities in business software the company uses—the same software used by many other businesses.…