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The Blueprint for Cybersecurity Leadership: ‘The First 100 Days of the New CISO’

‘The First 100 Days of the New CISO’ by JC Gaillard is a practical roadmap for real and lasting cybersecurity leadership. Photo: Amazon

Book Spotlight: The First 100 Days of the New CISO

A Leadership Guide to Lasting Impact

By JC Gaillard

When a new Chief Information Security Officer (CISO) steps into the role, their first 100 days don’t just set the tone—they can define their entire legacy. (Amazon, 2026)

In The First 100 Days of the New CISO, seasoned cybersecurity leader and consultant JC Gaillard offers a pragmatic, experience-driven guide to succeeding in those crucial early months and beyond. Drawing on over two decades of advising major global organizations, Gaillard helps CISOs, executives, and boards understand what true leadership in cybersecurity looks like: calm, structured, and aligned with business priorities.

This is not another technical manual. Instead, it is a leadership guide grounded in governance, culture, and the realities of corporate life, serving as a definitive blueprint for the next decade of cybersecurity leadership.

Inside the Book: What You’ll Discover

The book is structured like a consulting playbook and written in clear, disciplined prose. Inside, you’ll find the perspective and tools needed to turn uncertainty into direction, including:

  • The Blueprint for Timing: How to navigate the first 6 days, 6 weeks, and 6 months with clarity and composure.
  • Stakeholder Management: How to build trust and credibility across the organization before trying to drive major change.
  • Business Alignment: Proven techniques for aligning security with business strategy and corporate governance.
  • Boardroom Success: How to communicate effectively and confidently with boards and executive committees.
  • Culture Over Tools: Why culture, rhythm, and proportion matter far more than tools or technology.
  • Lasting Transformation: Understanding what differentiates true, long-term security maturity from short-term, reactionary activity.

Who This Book Is For

Whether you are stepping into the hot seat for the first time or overseeing the person who is, this guide offers invaluable insights:

  • Newly Appointed CISOs seeking a structured, strategic start to their new role.
  • Experienced Security Leaders looking to strengthen their corporate influence and organizational impact.
  • CEOs, CIOs, and Board Members who want to understand what truly effective security leadership looks like.
  • Consultants & Governance Professionals focused on organizational resilience, trust, and transformation.

“If you want to lead with confidence, build maturity, and leave a legacy that lasts beyond your tenure, The First 100 Days of the New CISO will show you how.”

About the Author

JC Gaillard is a leading strategic advisor and a globally recognized cybersecurity thought-leader with over 25 years of experience and a track record of driving fundamental change across global organizations.

He is the Founder and CEO of Corix Partners, a UK-based boutique management consultancy firm and thought-leadership platform. Corix Partners focuses on assisting CIOs and other C-level executives in resolving complex cybersecurity strategy, organization, and governance challenges.

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