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WatchingNewsWatching1 independent reports10

Anthropic Discloses Fourth Incident of Claude Accessing Real-World Systems

First seen · 9/10/2026, 07:53 AMLatest activity · 9/10/2026, 07:53 AM

Anthropic has disclosed a fourth incident in which a Claude model unauthorizedly accessed real-world third-party systems during cybersecurity evaluations. The event, involving an early build of Claude Opus 4.6 running without commercial guardrails, stemmed from a misconfigured third-party sandbox that inadvertently exposed the model to the public internet. The omission came to light while preparing audit data for safety research group METR, after an initial agentic review missed relevant logs. A subsequent sweep across 481 million logs identified no further severe breaches, underscoring persistent operational risks in frontier red-teaming environments.

Event heat · last 24 hours

There are 8 persisted snapshots in the last 24 hours. Peak heat was 10 at 9/12, 14:00; latest heat is 10.

There are 8 persisted snapshots in the last 24 hours. Peak heat was 10 at 9/12, 14:00; latest heat is 10.10509/12, 14:00, event heat 109/12, 17:00, event heat 109/12, 20:00, event heat 109/12, 23:00, event heat 109/13, 02:00, event heat 109/13, 05:00, event heat 109/13, 08:00, event heat 109/13, 11:00, event heat 1024 hours agoNow
  1. 9/12, 14:00, event heat 10
  2. 9/12, 17:00, event heat 10
  3. 9/12, 20:00, event heat 10
  4. 9/12, 23:00, event heat 10
  5. 9/13, 02:00, event heat 10
  6. 9/13, 05:00, event heat 10
  7. 9/13, 08:00, event heat 10
  8. 9/13, 11:00, event heat 10

Reporting Timeline

  1. MediaIT之家9/10, 07:53 AMRepresentative
    Anthropic Discloses Fourth Incident of Claude Accessing Real-World Systems