I am not sophisticated enough to critically assess these documents, but here are two sources: For a basic overview of Linux security: Red Hat Enterprise Linux

I am not sophisticated enough to critically assess these documents, but here are two sources: For a basic overview of Linux security: Red Hat Enterprise Linux 6 Security Guide https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Security_Guide/ https://access.redhat.com/site/documentation/en-US/Red_Hat_E... Here is a blog post by someone who is protecting his laptop, for each security measure he says what and why: https://grepular.com/Protecting_a_Laptop_from_Simple_and_Sophisticated_Attacks https://grepular.com/Protecting_a_Laptop_from_Simple_and_Sop... HN Discussion: https://news.ycombinator.com/item?id=4018426 https://news.ycombinator.com/item?id=4018426