I felt that this was a good lecture content that those who are new to security or are building their careers can learn practical content with appropriate practice materials. From the perspective of someone growing in the security industry, new vulnerabilities are always discovered and malware is created, but in order to analyze and respond quickly and accurately, you need to have a solid foundation. This was a good material to build that foundation. I am looking forward to it even more since they say the practice materials will continue to be updated. Thank you.