I was reading "Digital Forensic Technology" (Korea Forensic Society) after purchasing it, and I want to thank you for organizing the content so well that I could study the missing pieces quickly and easily. I am currently preparing for the Digital Forensic Level 2 certification; although I’ve read the book many times, I felt lost regarding how to prepare and which specific legal areas to study. Thank you so much.

It was very helpful!

Can't I get past exam questions?

Thank you for the good lecture.

The content still feels challenging to me, but I'm listening diligently with the mindset of taking my first steps. I can't wait to finish this and listen to the latest lectures too!

I was a first-year student in a related major, so I was practically like a non-major, but I studied hard with this summary + old past exams (rounds 1-14), and by discarding what needed to be discarded, I passed in just one month!!

I'm a non-major. I passed after just a month and a half of studying with the renewed book. However, I really recommend that you somehow get a hold of past exam question books and study them together.

I don't think I'll ever purchase an e-book like this again for as much as 38,500 won. I bought this e-book out of anxiety, but it doesn't even seem to have a publisher's ISBN, and the price isn't cheap compared to the content either. With content at the level of a first-year university general education course, you absolutely cannot pass the exam by studying this textbook alone. If I were to transfer the e-book textbook I purchased to someone else for free, the distribution rights would likely be limited under the so-called 'principle of exhaustion of rights,' but I'd like to give it away for free. Since I'm a working professional, I spent 38,500 won to purchase the textbook, but I recommend studying the proper way. You absolutely cannot pass by studying only this textbook. Many legal aspects are missing, and the technical content is lacking as well. I'm writing this after taking the 25th exam on September 20, 2025.

Thank you so much for making such an essential and excellent forensics and incident response investigation course available for free!

You organize difficult-to-understand content very well and teach it in an easy-to-understand way.