A basic explanation of cryptography.

Before I begin, I'll be using these terms a lot:

'Cryptography' is "the field concerned with linguistic and mathematical techniques for securing information, particularly in communications."

'Encryption' is "the process of obscuring information to make it unreadable without special knowledge."

A 'Cypher' or 'Encipherment' is "an algorithm for performing encryption (and the reverse, decryption)  a series of well-defined steps that can be followed as a procedure."
(wikipedia.org)

Cryptography has played a major role in history, and has effected the outcome of many wars. Knowledge is power, which is especially true on the battlefield. If you know your enemy's plans, you can win a war with an army half the size.

What Is Backtrack ?

BackTrack is a distribution based on the UbuntuGNU/Linux distribution aimed at digital forensics and penetration testing use. It is named after backtracking, a search algorithm. The current version is Kali, codenamed “Penetration Testing Redefind."
Tools BackTrack /Kali provides users with easy access to a comprehensive and large collection of security-related tools ranging from port scanners to password crackers. Support for Live CD and Live USBfunctionality allows users to boot BackTrack directly from portable media without requiring installation, though permanent installation to hard disk is also an option.

How to create jar virus..?

This paper explains how to create a virus, that infects runnable Java Archive Files (JAR) while preserving their functionality. I invented this technique, but I think it is something you can easily come up with once you know how a JAR works.

The emphasis lies on the infection technique, not on doing harm or hiding the virus from detection, which would be a whole topic by itself.

I. The Java Archive File

At first you need to know how your host program actually works to preserve the functionality of the host. A JAR file is a ZIP file with the file ending .jar and a file named MANIFEST.MF in it. The JAR usually contains Java Bytecode.

How to Back trace Key loggers..?

Now all key loggers and Rats are sending data to the hacker in regular intervals (usually every 5 to 10 minutes) by using one of the two methods below:


1. Using the Emails: where hacker configures his email ID and password while creating the server. Key logger records the key strokes in a temp file and sends it to the hacker in form of emails. But this has a limit as most free email servers like Gmail or Yahoo or Hotmail has limit of 500 composed and received mails. So most hackers use the second method.

How to protect your folder with password..?

1. Open Notepad and Copy code given below into it.


cls
@ECHO OFF
title coolhacking-tricks.blogspot.com
if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK
if NOT EXIST MyFolder goto MDMyFolder
:CONFIRM
echo Are you sure to lock this folder? (Y/N)
set/p "cho=>"
if %cho%==Y goto LOCK
if %cho%==y goto LOCK
if %cho%==n goto END
if %cho%==N goto END
echo Invalid choice.
goto CONFIRM
:LOCK