Cybersecurity 101: Fundamentals for Junior Engineers and Job Seekers (Book Review)

Andreas Constantinides has over 20 years of extensive experience in cybersecurity and IT, holding various managerial and supervisory roles. Currently, he serves as Manager of Professional Services at Odyssey Cybersecurity. With a BSc in Computer Science from Intercollege, Andreas Constantinides has a background in PC engineering and sales as well. He was also awarded the ISC2 Senior Professional Award 2023 for his contribution to the cybersecurity workforce. “Cybersecurity 101: Fundamentals for junior engineers and job seekers” is his latest book release. It is a comprehensive guide to answering core cybersecurity questions, concepts, and terminology. It is an essential guide for those who seek a career in the cybersecurity field, as well as for cybersecurity enthusiasts and companies. This article is a brief overview of his exceptional work.

Cybersecurity has always been a field that I have had my eyes on. As a self-taught and amateur enthusiast, I sought knowledge in different forums and sources. Fortunately, it was easy to get some answers back in the day. But I was surprised that cybersecurity wasn’t so prevalent in my country. The same thing that I noticed even in my workflow. There was a lot of ignorance and misinformation. As the Internet became more accessible, more people joined it. And the problem was even more notable. Fortunately, things improved, and more people were informed about the cyber threats.

Moreover, companies take the matter seriously and train more of their personnel. But things are even more menacing now than back in the day. Cybersecurity is advancing, but the same goes for malicious threats. Malicious actors are trying to step ahead of the competition and the “guardians.” And safety precautions and measures don’t come cheap. Large companies and organizations invest a dazzling amount of dollars and resources in proactive measures. But even the stronger ones have fallen, as history has taught us. Ransomware attacks are one of the most widespread threats these days. And it is a headache for both companies and casual users.

The good thing is that more and more people are attracted to the ethical side of things. The cybersecurity field is an essential aspect of the cyber world. But what does a candidate need, and where should they focus on their first steps on the field? Andreas Constantinides’s book is a comprehensive guide to the field, not only for job seekers but also for companies and enthusiasts. “Cybersecurity 101: Fundamentals for junior engineers and job seekers” is the perfect tour to enter and comprehend the fundamentals of the field. Internet and practice are essential, but the book offers comprehensive tips and advice and, most importantly, is organized. Because this is its treasure, it focuses on revealing the core values and concepts in a plain, explanatory way that doesn’t tire or confuse the reader.

The front cover

Even if you are not familiar with the concept, it assists you in a way that allows you to focus and learn more on your own. Some books achieve the same level as the CS101, but Constantinides’ manual is one of the best I have read. It keeps things simple, on point, and organized, which is essential. It doesn’t dive into the depths but achieves its core purpose. To assist cybersecurity engineers and job seekers. Even enthusiasts like me. It includes all the necessary concepts and analyzes them as much as it should. In addition, it implements on-point revisions and questions that will assist you in comprehending the concepts it deals with.

If you are willing to practice and research independently, then CS101 is the perfect companion. It will guide you in the right direction. Whatever you will need is in the book. The guide includes essential concepts like the CIA triad and how to analyze a file, all separated into ten chapters. To sum up, the CS101 fundamentals guide is the companion you need for your cyber security journey. Even if you are just an enthusiast, the book will be handy. You can find the book on Amazon, Kindle version, Google Books, Google Audiobooks, and Apple Books for about $18. “Fundamentals for junior engineers and job seekers” is the right tool for those who need a straightforward manual.

The back cover


  • Paperbook pages: 147
  • Language: English
  • Topic: Cybersecurity
  • For: cyber security professionals, amateurs, enthusiasts, and as a training manual for companies


  • Title Page
  • Copyright
  • Dedication
  • Introduction
  • Cybersecurity Fundamentals
  • Networking
  • Security Systems
  • Linux
  • Encryption And Authentication
  • Databases
  • Programming and Code
  • Compliance
  • CyberSecurity and Attacks
  • Credentials and Certifications
  • Epilogue

JimCKD’s Score: 9 / 10

( 0 is the minimum, 10 is the maximum )

Verdict: Highly Recommended

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