Anthropic got caught spying on its own users and called it an experiment
A developer reverse-engineering Anthropic’s Claude Code tool stumbled upon something not in any release notes, changelog, or terms of service: hidden logic, buried since April 2026, that silently fingerprinted users connecting through Chinese-linked proxies, encoding the results as invisible Unicode character swaps in every system prompt it sent. Anthropic, the company that has built its…

