The $0 Transaction That Signaled a Nation-State Cyberattack

A $0 card test signaled a Chinese state-linked cyberattack on Anthropic’s AI platform. Learn how card-testing fraud intelligence spots nation-state ops early.

A $0 card test signaled a Chinese state-linked cyberattack on Anthropic’s AI platform. Learn how card-testing fraud intelligence spots nation-state ops early. Key Points: Fraud enables cyber operations: Threat actors used compromised payment cards validated through Chinese-operated card-testing services to attempt unauthorized access to Anthropic's AI platform during a reported state-sponsored espionage campaign. Card testing signals downstream attacks: The observed fraud followed a predictable kill chain—compromise, validation, resale, and attempted cashout—providing early warning indicators that preceded the final malicious transaction. Recorded Future’s take: Proactive fraud intelligence prevents broader threats. Tester merchant intelligence can identify compromised cards before they're used for high-value fraud or to support advanced threat actor operations.