The Ultimate Beginner's Guide to defines as, simply, the act of penetrating computer systems to gain knowledge about the system and how it works (Ash, 4). The act of penetrating can range from harmless to malicious. Harmless could be into a college computer and copying some files in order brag to friends. Malicious is more planned. Usually when hackers are malicious, it is because they are taking revenge on someone or they need to cover their tracks. The most common type of is the harmless kind. The tools of a hacker include a pre ....