China's cybersecurity authorities on July 8, 2026 issued a warning that Anthropic's AI coding tool Claude Code contains a "built-in monitoring mechanism" that sends users' location data and identity identifiers to remote servers without consent, recommending that affected versions be uninstalled or updated.
July 8, 2026 · NVDB / MIIT Security Alert
China Flags a Hidden "Backdoor" in Anthropic's Claude Code
China's vulnerability authority warns that specific Claude Code versions carry an embedded monitoring mechanism transmitting location data and identity identifiers to remote servers without consent — and urges users to uninstall or upgrade.
106
affected versions flagged (2.1.91 → 2.1.196)
2.1.204
fixed release with the code removed
3
data types allegedly sent: location, identity IDs, proxy settings
The Affected Window
Number of versions flagged vs. clean — the alert spans 106 releases before the fix.
106×
flagged
2.1.91 → 2.1.196
How the Detection Allegedly Worked
1 · CHECK TIMEZONE
Detects Asia/Shanghai, Asia/Urumqi when a proxy is used
→
2 · MATCH TARGETS
Checks proxy URL against Chinese domains & major AI labs
→
3 · SIGNAL & SEND
Steganographic prompt tweaks + XOR-obfuscated data transmission
DEFENSIBLE INTENT
Some argue the goal — preventing resale and output distillation by Chinese labs — is understandable, and that the "spyware" label is exaggerated.
TRUST BREACH
Critics call the covert method a "fundamental breach of user trust" — easy to bypass, undisclosed in release notes, and at odds with stated anti-surveillance values.
FALLOUT
Alibaba banned internal use of Claude Code, labeled it "high-risk," and told staff to switch to its own Qoder tool — deepening a widening U.S.–China AI rift.
Anthropic is reported to have removed the code after exposure; no official company comment was confirmed at the time of reporting.
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