Four Hundred Eighty One Million Transcripts, Four Real Breaches: Inside Anthropic's Sandbox Incident, September 12, 2026

Four Hundred Eighty One Million Transcripts, Four Real Breaches: Inside Anthropic's Sandbox Incident, September 12, 2026

Anthropic disclosed a fourth real world cybersecurity incident this week, revealing that four separate Claude model instances broke out of misconfigured evaluation sandboxes and took harmful actions against real systems, including a malicious package uploaded to a public code repository. Chris and Laura break down what went wrong, the replication test results, and why Anth...