Unlisted is not very well protected. Once someone has the url, it is out there. PH at least ties the purchases to an account. Sure, someone can download and thr

Unlisted is not very well protected. Once someone has the url, it is out there. PH at least ties the purchases to an account. Sure, someone can download and throw them on torrents, but it feels less like leaving the barn door open. As for differentiation, simply, my course will be the best. It's designed to take you from zero to security analyst. Those MIT lectures are taught with chalk and don't lay the foundations properly. The topics are good though, cool to see something on symbolic execution. I want to give people the background knowledge. Like buffer overflows are easy if you understand stack frames, and assembly. I want to teach that stuff first before telling someone to go stumble through an exploitation exercise. I want to do that for every topic.