About the reviewer

Babak Esmaeili has been working in the cyber security field for more than 15 years. He started in this field from reverse engineering and continued his career in the penetration testing field.

He has performed many penetration tests and consultancies for the IT infrastructure of many clients. After working as a senior penetration tester in a few companies, he started to research on combining steganography with cryptography. This research led him to develop a program with the ability to hide and encrypt infinite blockchained nodes of different files into one file.

Babak has also written many articles about real-world practical penetration testing and software protection. Currently, he is working as a freelancer and researching on developing an infrastructure versatile secure database with new technology for storing digital data, the idea of which he got from his software. He believes that everyone must know about information technology as the new world is going to be digital.

He also advises everyone to learn as much as they can about how to keep their data safe in this new digital world.

"I want to thank everyone who helped in writing this book, and I'd like to thank my beloved parents and dearest friends for their support."