Hacking basically means the ability to crack someone' code to get access to his main program. It means getting unauthorized access to someone's PC either for owners welfare or with the intention to harm his PC with introducing unnecessary software or stealing his useful and critical information without even disturbing him, and it is worth saying that the person who perform this task is known as HACKER. Hackers are of three types:- 1)White Hat Hackers. 2)Black Hat Hackers. 3)Grey Hat Hackers. (Don't think that this hackers wear different color caps it's just to differenciate between them.) F irst lets know something about these WHITE HAT HACKERS... White Hackers are those persons who breaks into security system for non-malicious purpose, These Hackers generally work for a security group. The term White Hat refers to a persons who is expert in computer security or simply ethical hacker. Some of the prominent White Hat Hackers are:- Eric Corley Przemysław Frasune...