What Really Keeps a CISO's Mind Busy?

This Reddit post presents a mental model aimed at codifying the tacit understanding of the activities within the office of the CISO (Chief Information Security Officer). It is primarily intended for experienced practitioners to help them develop and maintain a good vision of their area of responsibility. For a broader audience, it serves to provide an overview of the activities of a well-managed CISO organization. The model aims to answer questions such as why CISOs always seem to be in meetings and what really keeps them busy. For senior practitioners, it offers avenues for reflection on strengths, areas requiring more focus, and the challenges associated with obtaining that focus.