From the early days of the Internet, when only e-mail servers were on the network, a hacker’s ultimate goal was to gain root access to the UNIX host that ran these applications. With root access, the hacker had full control of the system and could often collect enough information to gain access to the rest of the network and other partner networks. E-business application hosts have increased the number of targets for hackers. Hackers often exploit security vulnerabilities, or security holes, in the operating systems or applications of these hosts that system administrators have not safeguarded. Using buffer overflows, trojan horses, and other common techniques,.
