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Cathedral, a startup founded by four former Department of Government Efficiency staffers, breached Anthropic's internal business systems in less than 12 hours. The attack exposed sales, HR, and IT data but spared customer conversations and model weights. Anthropic shut off access the same day after identifying the unauthorized entry.
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Summary by ByteBrief

Startup Claims It Hacked Anthropic Systems

Cathedral, a months-old cybersecurity startup founded by ex-DOGE staffers, says it breached Anthropic's internal systems in under 12 hours using AI agents (Washington Post)

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