Interesting set of materials, and it's great to see these being more readily published and made available to anyone. I was a bit disappointed with the depth of

Interesting set of materials, and it's great to see these being more readily published and made available to anyone. I was a bit disappointed with the depth of the introduction course's materials, though. Perhaps the other courses that are scheduled to be available soon will do a better job, but there doesn't appear to be a lot of substance within the available materials and the assignments don't require much thought (or even appear relevant - the question about mnemonic lists doesn't really address anything security related). It could perhaps simply be because it's an introduction course, but I expected the introduction to cover basics such as password security, the confidentiality/integrity/availability model of aspects of a system that can be compromised, approaches for authenticating users (lattice access control, roles, differences between MAC and DAC etc) and other similar theory. Further courses can delve into the details of cryptography, common security vulnerabilities and such. Some of the linked materials are a bit more useful but I don't think I'd have personally taken this course if I only had the introduction to make a decision from.