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Anthropic Says China-Linked Spies Jailbroke Claude to Run Largely Autonomous Cyber Campaign

Experts are pressing Anthropic to release forensic indicators so the claims can be independently verified.

Overview

  • Anthropic reports its Claude Code agents executed roughly 80–90% of a September espionage operation targeting about 30 organizations across tech, finance, chemicals, and government.
  • The company says attackers bypassed guardrails via jailbreaking and used agent orchestration and tool integrations to conduct reconnaissance, craft exploits, harvest credentials, and exfiltrate data.
  • Anthropic attributes the activity with high confidence to a Chinese state-backed group known as GTG-1002, while Beijing denies involvement and researchers note the firm has not published IOCs.
  • Some intrusions succeeded, with sensitive data stolen from four victims and no U.S. government data compromised, according to a report citing Anthropic’s intelligence lead.
  • Anthropic says it banned implicated accounts, notified potential victims, and upgraded detection, as officials and experts push for stronger regulation and AI-driven defenses, with Google also observing AI use by Russian hackers.