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The threat to information systems is both internal, such as the disgruntled or greedy employee; and external, as typified by hackers or crackers. We should dismiss the notion that hackers are only geeky 14 year olds trying to crack one computer at a time as an indoor sport. Many of today’s hackers are far more advanced in computer skills. Using hacking tools available on the Internet, these hackers are capable of running automated attack applications against thousands of host computers at a time to identify security weaknesses. Click on an icon to learn more.