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OpenAI’s Rogue AI Agent Breached Second Company, Report Says

Securityaffairs.Co •Pierluigi Paganini • July 29, 2026

Reuters says OpenAI’s rogue AI agent also breached a Modal customer, exposing a wider attack and raising fresh concerns over autonomous AI safety. Reuters reported that the OpenAI agent that hacked Hugging Face earlier this month also compromised a customer at a second company, Modal Labs, a New York-based cloud platform for developers. Modal CTO […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

OpenAI Launches GPT-5.4-Cyber Amidst Cybersecurity Arms Race OpenAI has introduced GPT-5.4-Cyber, a specialized AI model for defensive cybersecurity, available only to vetted professionals through its Trusted Access for Cyber (TAC) program. This model is designed to facilitate advanced tasks such as binary reverse engineering and vulnerability analysis with fewer restrictions than standard models. The rollout follows a similar initiative by competitor Anthropic, which launched its own security tool, Mythos. OpenAI's TAC program aims to onboard thousands of verified defenders to enhance cybersecurity capabilities in response to increasing AI-driven threats. The model's limited access reflects concerns over potential misuse and the dual-use nature of advanced AI tools. OpenAI emphasizes the need for rigorous identity verification to ensure that only legitimate users can access these capabilities. The initiative is part of a broader strategy to democratize access to AI while maintaining security. The urgency of this development is underscored by rising cyber threats that exploit vulnerabilities in critical infrastructure. 1370 sources 52

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OpenAI’s Rogue AI Agent Breached Second Company, Report Says

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Extracted Entities

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