What is SELinux
The project’s official description reads “SELinux is a security enhancement to Linux which allows users and administrators more control over access control.”
SELinux is a set of Open sourced and peer reviewed changes to the core Android.
DNA as Digital Data Storage Device

Forget about your portable hard drive. Scientists have successfully stored computer files on a strand of DNA.
Scientists
Storing information is what DNA does best. DNA holds the genetic code of each species, and spells out the exact instructions.
Android Hidden Secret Codes (Cheat Sheet)

This code can give you access to a whole multitude of hidden menus, diagnostic tests and much more. Smartphones don’t hake exclusivity though – these codes can be found on both dumb and feature phones as well. Android devices have codes that are.
Wordlist: Creating your own WordList using Backtrack
Having a big and a good wordlists always help but as a penetration tester you must be able to create your own custom wordlists depending on the situation.
Here in this tutorial I am going to show you that how you can make your own wordlist according.
Posted by mangesh_more
Steganography (A Data Hiding Technique)
This technique is used for secure communication as cryptography but It is different from cryptography in various manner as described below :
Steganography hides text in plain sight, while cryptography scrambles plaintext (original message) into ciphertext.
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Mac OS BASH and TERMINAL
A very powerful tool included with every Mac computer, Terminal is a command line interface that can be accessed using the terminal application at Applications/Terminal.app. The terminal originated in the predecessors of Mac OS X, called NeXTSTEP.
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