Cybersecurity Isn’t About Tools and Tech

Last Updated on April 26, 2026 by Arnav Sharma

And that’s exactly why I wrote my second book.

Seven months ago, on 30 September 2025, my first book Mastering Azure Security was published by BPB Publications. It was the technical deep-dive I’d wanted to write for years. Zero Trust, Entra ID, Defender for Cloud, Sentinel, the whole Azure security stack, from shared responsibility fundamentals all the way to posture management and threat detection.

Today, I’m launching my second book. And this one is very different.

The 4 Corners of Cybersecurity: People, Process, Technology, and Threats is self-published, available now on Kindle and paperback. It’s the book I wish I’d had when I started out in cybersecurity. And it’s the book I keep wanting to hand to every mentee, every client, and every leader who asks me the same question: where do I actually start?

Why a second book, and why this one?

Here’s the honest answer. Every architecture review I sit in, every incident retro I run, every mentoring conversation I have, the same pattern keeps showing up.

The organisation has the tools. They have the licenses. They have the dashboards, the SIEM, the EDR, the CASB, the shiny quadrant leader logos on the wall. And they still got breached. Or they’re still failing audits. Or their analysts are still burnt out and quietly updating their LinkedIn profiles.

Mastering Azure Security answered the question “how do I secure this platform properly?” It’s a good book for that, and the feedback from readers and reviewers has been humbling.

But it doesn’t answer the bigger question. The one that sits underneath every security program I’ve ever reviewed: why do well-funded security teams with good tools still fail?

That question is what The 4 Corners of Cybersecurity is built around.

What makes this book different

This is not another framework book. The world doesn’t need another walkthrough of NIST CSF or ISO 27001. Those frameworks are fine, and I use them in client work all the time, but they’re maps. They’re not the territory.

The 4 Corners of Cybersecurity is written for the territory. It’s for the practitioner who needs to make decisions on Monday morning. For the architect who has to explain to the board why more tooling isn’t the answer. For the new security engineer who wants to understand how the pieces actually fit together before they get handed a SIEM and told to “go secure things.”

No vendor pitches. No framework worship. No 60-page appendix of acronyms. Just the lessons I wish someone had handed me earlier in my career, organised around the four corners that I keep coming back to.

What I learned writing it

Writing a second book is not like writing a first. Mastering Azure Security was a traditional publishing journey with BPB. They had a team, a process, editors, a production schedule, and a deadline I had to hit. That structure was a gift for a first-time author.

Self-publishing this one taught me a completely different craft. I learned that writing the manuscript is maybe 40% of the work. The other 60% is covers, formatting, KDP metadata, ISBNs, pre-orders, cover dimensions down to the fraction of an inch for print, and a hundred other details nobody warns you about. I learned that a good cover costs more than you think and matters more than you think. I learned that formatting a 400-page book will break your soul, and then you’ll learn it and never fear it again.

I also learned that writing a book you fully own, from cover to copyright, is a different kind of satisfying. Mastering Azure Security will always be my first. But The 4 Corners of Cybersecurity is the first one that’s entirely mine.

Both matter. Both taught me things the other couldn’t have.

Who this book is for

If you’re any of the following, this book was written for you:

• A security engineer or analyst who wants to understand the bigger picture beyond the tool you were hired to run.
• An architect or consultant who needs a clear way to explain to leadership why security isn’t a shopping problem.
• A CISO or security leader who wants to pressure-test your own program against the four corners.
• A student or career-changer coming into cybersecurity who wants a practitioner’s map of the field, not a textbook.
• Anyone who’s ever sat in a meeting and thought “we have all the tools, why does this still feel broken?”

If you read Mastering Azure Security and liked the practitioner voice, you’ll find it here too. Same voice, bigger canvas.

Where to get it

The 4 Corners of Cybersecurity: People, Process, Technology, and Threats is available now on Amazon in Kindle and paperback. Hardcover coming soon.

If you haven’t read the first one yet, Mastering Azure Security is still available through BPB and Amazon, and it pairs well with this one. The first is the deep technical dive. The second is the zoom-out.

A thank you, and a question

To everyone who bought, reviewed, or shared Mastering Azure Security over the last seven months: thank you. You’re the reason this second book exists. Every message, every review, every “hey I read your book” DM has meant more than you know.

And now, a question I’d love to hear your answer to.

Which of the four corners does your organisation get wrong most often? And which one do you think matters most?

My answer, after years of architecture work and two books worth of thinking about it, is process. Tools get bought. People get hired. Threats get talked about in every boardroom. But process is where almost every program I’ve reviewed actually falls apart.

I’d genuinely love to hear yours. Drop a comment, send me a message, or find me on LinkedIn.