Here is a lightning talk I have recorded recently. I did it internally at Alfresco for an Engineering meeting but I think is good idea to share it and take advantage of the coming new season of Game of Thrones
You have links and resources also available below the video.
If you want to use the ppt for your own use you can download it from here in my GitHub:
https://github.com/toniblyx/10-security-concepts-with-got
All references and recommended reads about the subject are here:
https://danielmiessler.com/study/encoding-encryption-hashing-obfuscation/