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Lessons from the Frontlines
book

Lessons from the Frontlines

by Assaf Keren
January 2026
Beginner to intermediate
272 pages
5h 4m
English
Wiley
Content preview from Lessons from the Frontlines

Afterword

The frameworks I’ve shared over these thirteen chapters—curiosity, grit, optimism, execution, change management, business acumen, diplomacy, stating reality while inspiring hope, acknowledging mental challenges, building self-help strategies, and creating supportive communities—aren’t theoretical. It’s been built from 25 years of real experiences, both successes and failures.

Security leadership is a journey for everybody. What makes the difference isn’t avoiding failure. It’s learning from failure, getting back up, and using those lessons to become better.

The stories I’ve shared—from struggling with that wall in basic training to burning out at PayPal, from harsh feedback at Israeli eGovernment to embarrassing myself in front of executives—aren’t exceptional failures. They’re the normal experiences of someone learning to lead in a complex, demanding field.

Every security leader you admire has stories like mine. Every successful CISO has made mistakes, faced setbacks, and had to rebuild their approach based on what they learned.

And that’s the truth I want you to remember as you close this book and continue your own path in cybersecurity leadership.

The Leaders We Need

The cybersecurity field needs leaders who can think strategically while executing tactically, who can balance technical expertise with business understanding, who can build relationships while making tough decisions, and who can maintain their humanity while dealing with constant threats and pressure. ...

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Publisher Resources

ISBN: 9781394395385