To get straight to the point, I mainly studied with this summary guide, and I passed the written exam, but I think this summary guide has some outdated parts 😭 When I studied with the summary guide and solved past exams (I only got relatively old past exams from before 2019 due to circumstances and only solved those), I thought it was well-summarized as the parts emphasized in the summary guide appeared frequently. Therefore, I went to the exam center having almost memorized the entire contents of the summary guide... But in the 2025 24th exam I took, there was very little content from the summary guide itself, let's say nothing of the content emphasized in the guide... 😭😭 I am a cybersecurity major, so I think I managed to pass by somehow pulling knowledge from the back of my mind, but when I first came out of the exam center, I felt so lost that I thought I would surely fail. If you are a major and already have some knowledge of forensics, I think it's not bad to get a feel for it with this summary guide, with the idea of rebuilding your conceptual framework, but for non-majors to study mainly with this summary guide and quickly pass the written exam just like that, I think this summary guide is now unsuitable...!