The Internet is an information gateway offering unlimited resources. However, every computer user must be aware that the Internet is also full of malicious content that can invade your computer’s operating system, and wreak havoc on personal data. If you have ever downloaded any software, music, games, movies, or pictures your computer has a 90% chance of being infected with a virus. Once infected, your system can suffer a variety of damaging and expensive problems. Computer viruses can take up considerable amounts of your computer’s memory, which can prevent other programs and applications from running properly. Viruses can erase files, attack your computer’s registry, cause errors during program execution, prevent programs from running at all, and can cause your system to crash. Viruses can spread to other computers by replicating themselves similar to their real-life counterparts. Spyware and malware can exploit a PC’s system configuration files and cause website...