I have tried twice to put together a hands-on full-day "security for data scientists" tutorial but am finding it just as hard as a "systems programming/devops for data scientists" tutorial: the topics are so scattered and disjoint, and require so much random background knowledge, that the material doesn't hang together and will probably just frustrate participants. I would be very grateful for pointers to open-access lessons on either topic that actually work - thanks in advance.