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FACT CHECK #GZMJ_LSQ

07/02/26 · 2:01 AM UTC · 11 SOURCES

“Anthropic has embedded hidden spyware-like code in Claude Code that covertly targets Chinese users.”
TRUE ✓

MEDIUM CONFIDENCE

TL;DR ·Anthropic embedded hidden logic in Claude Code to identify Chinese users via system prompts.

WHAT WE FOUND

Evidence from multiple reports confirms that Anthropic embedded hidden detection logic within its Claude Code command-line tool to identify Chinese users . The code performs a multi-factor check by inspecting the user's system timezone for matches such as Asia/Shanghai or Asia/Urumqi and monitoring the `ANTHROPIC_BASE_URL` environment variable . This collected environmental data is silently encoded into system prompts and sent to Anthropic's servers without the user's knowledge . The mechanism is reportedly used to trigger account suspensions and blacklist proxy networks used to access the service from within China . Following a researcher's public disclosure of this covert channel, Anthropic is reportedly rolling back the tracking feature due to developer backlash .

SOURCES

  1. 1 · cryptobriefing.comWEB
    Anthropic accused of embedding hidden spyware in Claude Code targeting Chinese users

    TIER B

  2. 2 · cybersecuritynews.comWEB
    Anthropic's Claude Code Reportedly Uses Hidden Code to Detect Chinese Users

    TIER B

  3. 3 · timesofindia.indiatimes.comWEB
    Why Anthropic embedded ‘spyware’ in Claude Code and attempted to hide it from users in ... - The Times of India

    TIER B

  4. 4 · news.ycombinator.comWEB
    Anthropic has embedded hidden spyware-like code in Claude Code | Hacker News

    TIER B

  5. 5 · digg.comWEB
    Anthropic's Claude Code is accused of quietly ...

    TIER B

  6. 6 · news247wp.comWEB
    AI Malware: Anthropic’s Hidden Threat to Chinese Users#News247WorldPress

    TIER B

  7. 7 · internationalcyberdigest.comWEB
    Claude Code accused of hiding China proxy fingerprints inside system prompts

    TIER B

  8. 8 · thenews.com.pkWEB
    Did Anthropic secretly monitor Chinese Claude Code users? New claims spark controversy

    TIER B

  9. 9 · chinatechnews.comWEB
    Did Anthropic secretly monitor Chinese Claude Code users? New claims spark controversy - ChinaTechNews.com

    TIER B

  10. 10 · kucoin.comWEB
    Developer Accuses Anthropic of Embedding Hidden Detection Logic in Claude Code Targeting Chinese Users | KuCoin

    TIER B

  11. 11 · indiatoday.inWEB
    Anthropic tried to spy on Chinese Claude users through hidden code, now faces backlash - India Today

    TIER B

VERDICT TOTALTRUE ✓
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