Statistics show that with the rapid development of IT technologies, hacking has become a global phenomenon practiced by thousands of computer-savvy people around the world. Highly important institutions like the Pentagon are being attacked every single day. Some hackers claim that their actions actually help, since this is how security flaws can be detected, and they are acting only as aid-men, not taking selfish advantages of their abilities. A sharp contrast to this statement are the cases of computer fraud and other cyber-crimes. Due to their unique IT knowledge, hackers are often recruited by large companies to improve their security networks. In order to find out more about computer hacking, its origins and culture, as well as the most famous hackers - read this book.