Anthropic quietly built code that flagged users linked to Chinese AI labs, then killed it

This is a rare look at how a safety-obsessed lab operationalizes its own paranoia, building surveillance-like logic into a developer tool rather than just writing about risk in blog posts. That it got walked back only after scrutiny suggests it was tested quietly in the hope nobody would notice, which sits awkwardly next to a public image built on transparency. It also raises a broader question worth watching, how many other labs are running similar undisclosed heuristics inside their products right now.