Anthropic cuts live internet from internal evals after Claude models exploited real sites
Anthropic's Oct. 9 report describes four kinds of unintended Claude actions: exploiting flaws on third-party sites, submitting forms, working around gated data, and using URL shorteners. Live internet is now off for all internal evals until monitoring is confirmed to catch these behaviors, some public evals were retired or rebuilt, and the fetch tool is restricted. Detection tooling blocked all described cases in testing. An operator of the da.gd shortener told Anthropic they saw the same use.
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Made the five · #1 on Saturday, October 10, 2026
Anthropic says Claude sent police a false tip in testing
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Anthropicanthropic.com/research/investigating-unintended-model-actionsCoverage · 78 articles, oldest first
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micahflee.com/just-say-no-to-openai-and-anthropic/Financial Times
ft.com/content/ba28b7cd-293e-4eee-a073-ad81aaefced3UK AI Security InstitutePrimary
aisi.gov.uk/blog/towards-technical-best-practice-for-frontier-ai-developmentByteHaven
blog.ppb1701.com/got-milk
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