Linux File Permissions Basic
This website explains the basic principle of linux permissions system
Chmod Calculator
This site is a calculator to help create chmod octal value for changing file permissions
Understanding Digital Signature
This site explains the basics of digital signature, how it works and why you should use it.
Encryption Basic
This site explains the basics of encryption. Including what it is, how it works, and its importance
Understanding sha256
This site explain sha256 signature, one of the most used hashing function.
OWASP Top 10
This site lists top 10 web application security risks.
Linux ACL
This site contains intoduction to linux Access Control Lists. It contain how can we use it, how to set it up, and many more
GNUPG documentation
This site contains the documentation of GNUPG
C Tutorial
This site offers free C Language tutprial for everyone.
Linux Privacy Tips
This site list few tips on how to make your linux secure