SUMMARYAnthropic faced accusations that Claude Code inserted hidden routing metadata and China-related fingerprints into system prompts, including timezone and proxy information. The claims centered on covert tracking behavior and a possible warning to Chinese users and resellers, with no confirmed evidence in the provided text of a product improvement or broader benefit to AI or humanity.

"Anthropic’s hidden "spyware" warning shot at China: The issue isn’t that Anthropic can detect proxies or collect operational metadata. That is expected. The issue is that Claude Code allegedly encoded routing and China-related fingerprints into the system prompt using near-invisible Unic…" — Chubby

BREAKING: Anthropic has embedded hidden spyware-like code in Claude Code that covertly targets Chinese users. It then sends information regarding every user by injecting it into their prompt message.

Claude Code is sending info like timezone, proxy and possible AI Lab connections into the system prompt in ways Chinese users can't notice.

A coding agent with repo and command permissions should not silently hide routing metadata inside prompts. This is a serious breach of user trust.

— International Cyber Digest

Source: https://x.com/IntCyberDigest/status/2071971609183678544

Anthropic’s hidden "spyware" warning shot at China:

The issue isn’t that Anthropic can detect proxies or collect operational metadata. That is expected.

The issue is that Claude Code allegedly encoded routing and China-related fingerprints into the system prompt using near-invisible Unicode/date-format changes.

It looks mire like a indirect warning: Anthropic can fingerprint proxy-based China routing, and it wants resellers and labs to know they are being watched.

— Chubby

Source: https://x.com/kimmonismus/status/2072318052788572651