Encryption can be defined as the process of concealing the contents of tool or message to make it more powerful and anonymous. There are many sub categories under encryption. There is Cryptography, steganography and so on. Encryption makes things more complex and secure. There is web encryption, Os encryption, .exe encryption, programming encryption and so on. This is the most important topic of security and hacking. In this section we will take a closer look at many may of encrypting diffrent things.

Trojan horses present more difficulties in definition than at first appears. Whereas viruses are defined primarily by their ability to replicate, Trojans are primarily defined by their payload, or, to use a less emotive term, their function.

Programming is another skill needed to become more advance Ehtical Hacker. As beginner to programming one always faces the main question! "What Programming language should I learn first?" The first thing you have to ask your self is "for what purpose am I willing to learn programming?" Are you looking to program for gaming, for security reasons, web programming or for Windows/Unix applications? Once you know what you want to do than you can start choosing the Lang you need. You might be wondering what some popular languages out there are. Remember don?t confuse your self with [Web] programming and [Application] programming.

Wireless Networks are increasingly becoming popular due to there advance design, convenience and cost but at same time introduced many security issues and holes.

In computer security, social engineering is a term that describes a non-technical kind of intrusion that relies heavily on human interaction and often involves tricking other people to break normal security procedures.

What's Denial of Service? There are the many questions that still lurk around. There are different types of Denial of Service attacks. There is DoS, DDoS and Zombie attack.