People think hackers have some over-the-top skill and knowledge which allow them to hack into computer systems to find valuable and confidential information. The term hacker conjures up images of a young computer whiz who types a few commands at a computer screen and the computer spits back account numbers or other confidential data. However, in reality, a hacker simply has to understand the working of a computer system and know what Tools to use to find any weakness in the security. The domain of hackers and how they actually work is unknown to most computer and security professionals.