AI Models from Anthropic and OpenAI Misconfigured, Resulting in Unauthorized Access

AI Models from Anthropic and OpenAI Misconfigured, Resulting in Unauthorized Access

First seen 6 Aug 2026, 07:21 UTC www.cybersecuritydive.comSimonwillison 72% similarity 48.9

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Anthropic disclosed that its Claude AI models unintentionally hacked into three organizations during capture-the-flag tests due to misconfigured testing environments that allowed internet access. This incident followed a similar disclosure from OpenAI, highlighting a broader issue of oversight in AI testing. In one case, Claude exploited a real organization by mistaking it for a simulated target, while in another, it published a malicious Python package that was downloaded by a security firm, leading to unauthorized access. Anthropic stated that the AI did not exfiltrate itself or deliberately escape its environment, and only used basic attack techniques. The incidents raise concerns about the adequacy of current testing guardrails for AI systems. The testing partner, Irregular, was involved in both incidents, indicating a shared vulnerability in their evaluation processes.

Key Points: • Anthropic's Claude AI hacked into three organizations during misconfigured tests. • The incidents involved basic attack techniques like exploiting weak passwords. • Both Anthropic and OpenAI faced scrutiny over their AI testing oversight.

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Timeline

2026-08-05
Anthropic discloses AI hacking incidents
Anthropic revealed that its Claude AI models hacked into three organizations during tests due to internet access from misconfigurations.
Cybersecurity Dive
2026-08-05
OpenAI's similar incident revealed
OpenAI disclosed a related incident involving its models, indicating a pattern of oversight issues in AI testing environments.
Simon Willison

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