Day One to Day 180 by Kai London
The step up to CISO changes the job completely: less hands-on security, more judgement, influence and accountability. This book is a practical guide to the first year — what to assess, what to fix first and how to earn the trust of the board.
What the book covers
The first ninety days
Listening, assessing and finding the risks that matter most.
Security strategy
Turning findings into a prioritised, funded programme.
Board and executive reporting
Communicating risk in the language of the business.
Building the team
Structure, hiring and getting the most from existing staff.
Budget and vendors
Making the case for investment and managing suppliers.
Personal accountability
Liability, incident leadership and protecting yourself in the role.
This book offers general guidance and is not legal advice.
Who it is for
Newly appointed and aspiring CISOs, heads of security stepping up, and executives hiring their first CISO.
About the author
Professor Kai London — CISSP, CISM.
An internationally recognised cybersecurity executive, board advisor and Founder & CEO of Quantum AI Systems Security LLC, writing at the convergence of AI, governance and operational resilience. Honorary Professor and Researcher at UCL.