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Cybersecurity Fundamentals: A Practical Guide for Everyone

You do not need to be a tech expert to stay safe online. You just need this book. Written for the person who uses the internet every day but has never had anyone explain, in plain English, what the real risks are and exactly what to do about them.

By Avijit Roy · Cybersecurity Researcher, Educator & AI Engineer

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Cover of Cybersecurity Fundamentals: A Practical Guide for Everyone, by Avijit Roy

Every day, ordinary people lose their savings, their identities, and their peace of mind to cybercriminals who are far more sophisticated than most people realize. Older adults are disproportionately targeted, not because they are careless, but because they are trusting, and because professional scammers study human psychology the way a surgeon studies anatomy.

Every chapter is written without jargon, with real-world analogies that connect digital threats to things you already understand. No technical background required.

What You'll Learn

How to create passwords that actually protect you — and why yours probably do not.
How to recognize a phishing email, a romance scam, or a tech support fraud before it costs you.
How to protect your bank account, your credit, and your identity online.
What to do the moment something goes wrong — a calm, step-by-step plan.
How to back up your irreplaceable photos and documents so nothing is ever permanently lost.
How artificial intelligence is being used against ordinary people — and how defenders are fighting back.
Your legal rights as a consumer and what the law requires companies to do to protect your data.

Who This Book Is For

This book was written for the person who uses the internet every day but has never had anyone explain, in plain English, what the real risks are and exactly what to do about them — no technical background required.

It also makes a meaningful gift. If someone you love — a parent, grandparent, sibling, or friend — navigates the digital world without the protection this knowledge provides, putting this book in their hands is one of the most genuinely useful things you can do for them.

About the Author

Avijit Roy

Avijit Roy is a cybersecurity researcher, AI engineer, and educator based in New York. His work spans privacy-aware AI systems, digital forensics, and secure software engineering, and he teaches computer science at John Jay College of Criminal Justice (CUNY). Knowledge is your most powerful protection — it starts here.

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Frequently Asked Questions

Do I need a technical background to understand this book?

No. The book is written in plain English with real-world analogies, specifically for readers who use the internet every day but have no technical or cybersecurity background.

Who is Cybersecurity Fundamentals written for?

It is written for everyday internet users, including older adults who are frequently targeted by scammers. It also makes a practical gift for a parent, grandparent, sibling, or friend who could benefit from clear online-safety guidance.

What topics does the book cover?

Creating passwords that actually protect you, recognizing phishing emails, romance scams, and tech support fraud, protecting your bank account and identity online, what to do when something goes wrong, backing up photos and documents, how AI is used against ordinary people, and your consumer data-privacy rights.

Who wrote Cybersecurity Fundamentals: A Practical Guide for Everyone?

Avijit Roy, a cybersecurity researcher, AI engineer, and educator based in New York who teaches computer science at John Jay College of Criminal Justice (CUNY).

Where can I buy this book?

The book is available as a Kindle edition on Amazon.

Knowledge Is Your Most Powerful Protection

Available now on Amazon Kindle.

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