Anonymous Security Handbook
About the ebook
This is a security handbook by Anonymous (internet activists or hacktivists) to help it's members stay anonymous. While it has no direct utility for you in the context of anonymous, it has a lot of useful information which which help you protect your privacy on the internet and stay safe as a hacker. You can find more about anonymous here.Anonymous – The Über-Secret Handbook
Note: While I didn't find anything in the ebook which said it was licensed under creative commons, I assumed that it isn't copyrighted and I am free to propagate this material via my blog.