OpenAI security chief leaves the company0

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• July 11, 2026

The head of OpenAI security systems, Johannes Heidecke, told staff this week that he is leaving the company, WIRED has learned. Heidecke’s departure follows a reorganization that sought to integrate OpenAI’s research and security teams. In a memo to staff seen by WIRED, research director Mark Chen said OpenAI’s security teams will now report to