[ How to secure a linux server ] http://spenserj.com/blog/2013/07/15/securing-a-linux-server/ https://news.ycombinator.com/item?id=6384603

[ Basic security for running websites ]
https://news.ycombinator.com/item?id=5594739

[ Security research papers ]
http://www.covert.io/security-datascience-papers/