Who is a Hacker?
A Hacker or White Hat Hacker, also known as Ethical Hacker, is a computer security expert, who is specialized in penetration testing or other testing methodologies to ensure that a company’s information systems are secure. Such people are employed by companies where these professionals are sometimes called as Sneakers.
Who is a Cracker?
Black Hat Hackers, who may also be known as Crackers, are Hackers, who specialise in unauthorized penetration of information systems. They may use computers to attack systems for profit, for fun, or for political motivations, as part of a social cause. Such penetration often involves modification and/or destruction of data, and is done without authorization. They also may distribute computer viruses, Internet Worms, and deliver spam through the use of bot nets.
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