DevelopingSafety

Startup Cathedral says AI agents breached Anthropic systems in under 12 hours

Cathedral, founded by former DOGE staffers, says its AI agents exploited third-party business software to reach Anthropic data in under 12 hours, per Gizmodo's account of its report. Anthropic confirms access to a limited set of sales, HR and IT systems, not user conversations, source code or model weights, and says Cathedral broke its bug bounty rules.

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FIRST SEEN: Oct 26, 2026, 08:10 ET
LAST SIGNAL: 2h ago

Primary source

Gizmodogizmodo.com/former-doge-staffers-new-startup-claims-it-hacked-anthropic-2000830560

Coverage · 10 articles, oldest first

Monday, October 26, 2026

08:10
The Washington Post
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
12:10
Gizmodo
gizmodo.com/former-doge-staffers-new-startup-claims-it-hacked-anthropic-2000830560
12:10
Cyber Security News
cybersecuritynews.com/anthropic-internal-system-breach/
13:10
ZeroHedge News
zerohedge.com/political/former-doge-staffers-hacked-anthropics-internal-systems-12-hours-and-what-they-found
13:10
Tech Startups
techstartups.com/2026/10/26/ex-doge-ai-cybersecurity-startup-cathedral-breaches-anthropics-internal-systems-in-under-12-hours-using-ai-agents-exposing-sensitive-employee-data/
14:10
Digital Trends
digitaltrends.com/cool-tech/anthropics-sensitive-internal-data-was-exposed-and-ai-helped-make-it-happen/
16:10
Decrypt
decrypt.co/381860/ai-agents-hack-anthropic-business-systems-12-hours
17:10
NewsMax.com
newsmax.com/newsfront/anthropic-artificial-intelligence-cybersecurity/2026/10/26/id/1274065/
17:10
The Enterprise
newsletter.amuseonx.com/p/the-right-answer-to-ai-enabled-hacking

Tuesday, October 27, 2026

02:10
Techreport
techreport.com/news/software/ai-agents-anthropic-business-systems-12-hours/

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