This document provides information on how to protect your computer from viruses, spyware, malware, and hackers. It defines these threats and outlines signs that indicate your computer may be corrupted. It recommends using antivirus software, not downloading suspicious files, and giving regular maintenance to your computer like cleaning, defragmenting, and uninstalling unused programs. The document advises that if these measures don't work, you may need to do a system restore, scan with multiple antivirus programs, or completely reinstall your operating system as a last resort. Maintaining an up-to-date antivirus program and safe web browsing practices are key to preventing corruption and keeping your computer running smoothly.