Woofun AI reports that Johannes Heidecke, former Head of Security at OpenAI, has announced his resignation to employees. The organization is restructuring its security division to integrate it more closely with the research team. Mia Glaese, previously VP of Research and Alignment, is promoted to VP of Research and Security, with all security units now reporting to her. Saachi Jain serves as interim Head of Security under Glaese. Chief Research Officer Mark Chen stated that accelerated model training and shorter release cycles necessitate earlier security involvement in decision-making.