COMPUTE!’s Computer Viruses by Ralph Roberts is a 1988 guide to the then-emerging threat of malicious software, explaining what computer viruses, Trojan horses, worms, logic bombs, boot infectors, and program infectors are, how they spread through floppy disks, networks, bulletin board downloads, and shared software, and how they can damage files, operating systems, boot sectors, and disk allocation tables. The book reviews notable early outbreaks such as the Macintosh Scores virus, the IBM PC Brain and Lehigh viruses, and the Friday the 13th virus, while stressing that viruses affected major platforms including IBM compatibles, Macintosh, Atari, and Amiga systems. Written for individual computer owners and organizations alike, it focuses on detection, prevention, backup practices, safe computing habits, antivirus tools, and corporate data-security policies, capturing the growing concern over computer security at the dawn of widespread personal-computer connectivity.