Now Available to Pre-Order on Kindle

The Binary Digital Playbook Series

Releasing 9 October 2026 · Kindle Edition · £5.99

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Mark Adjei is a CISO and an American football coach. In both settings he has seen the same thing: teams rarely fail because of a lack of skill. They fail when alignment, roles and communication break down under pressure. The Hacker in the Huddle turns lessons from the huddle into a leadership operating system for cybersecurity and other high-pressure environments.

Written for CISOs, cyber risk leaders, incident leads and executives — and for anyone leading a team where mistakes become public, regulated or expensive.

Have you ever been in a room where everyone is capable, but the room is starting to drift?

The talent is there. The experience is there. The urgency is certainly there.

But clarity is missing. Alignment is slipping. And people are starting to look around for direction.

I have been in that room. On the field. On the sideline. And in cybersecurity, where the stakes are real.

It is rarely a capability problem. It is an alignment problem.

When I started seeing the same signals surface across football, cyber teams, and mentoring, I paid attention. When I first shared those parallels, people recognised it immediately — not because it was new, but because they had seen it. They knew the room. They knew the drift. They knew what it felt like to be expected to lead before they felt ready.

That stayed with me. Because leadership is often presented in a static, polished, corporate way. But real leadership moves. It shifts. It stretches people. It asks for clarity, trust, discipline, communication, adaptability, and judgement — often all at once.

That is what led me to build The Hacker in the Huddle.