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Hackers Are Draining Claude Subscribers' AI Credits and Anthropic Is Finally Talking About It

9 September 2026
Hackers Are Draining Claude Subscribers' AI Credits and Anthropic Is Finally Talking About It
Future Technology

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SECURITY

Hackers Are Draining Claude Subscribers' AI Credits and Anthropic Is Finally Talking About It

Imagine paying for a premium AI subscription and then watching your monthly allowance drain away while you slept. That is exactly what happened to at least one Claude user last month, who noticed his account was consuming tokens at a rapid rate despite him not being logged in or actively using the service. Since then, Anthropic has confirmed the issue is real and has warned its user base that hackers are actively stealing Claude API tokens from subscribers.

Key Takeaways

  • Hackers are stealing Claude API tokens by gaining unauthorised access to subscriber accounts through phishing and credential stuffing
  • Victims on pay-as-you-go API plans face unexpected charges; flat-rate subscribers lose their monthly allowances
  • Anthropic confirmed the issue and is urging users to enable two-factor authentication and audit API keys
  • There is an active underground market for stolen AI API credentials used for spam, content generation, and resale

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