Chapter 14. Stopping Viruses, Worms, and Trojan Horses

How Malicious Software Attacks Your Computer 458

Identifying Malicious Software 470

Choosing an Antivirus Program 474

Protecting Your Computer from Hostile Software 482

Repairing an Infected System 490

It's not your imagination. Computer viruses are becoming more prevalent, more virulent, and downright sneakier each year. Historians generally agree that the first computer virus appeared "in the wild" in 1981, many years before the release of Microsoft Windows. That first virus, disguised as a computer game, attacked the most popular computer of its day, the Apple II. It spread at a snail's pace, carried from one computer to another by infected floppy disks.

More than two decades later, the spread ...

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