Undoubtedly, many of us are perplexed as to why various security measures permit remote access and control from outside. So, I advise learning about security misconfiguration https://qawerk.com/blog/security-misconfiguration/ because it enables you to learn about testing applications and security systems at different levels, which is crucial when developing a useful application. A further point I want to make is that many people who work in application testing and programming will find this information useful.