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兵来将挡，水来土掩

　　目前常见的第二代病毒，其实破坏性都不大，例如在浏览器中不断开启窗口的"窗口炸弹"，带着电子计时器发出"咚咚"声的"闹闹熊"等，只要把浏览器关闭后，对电脑并不会有任何影响。但随着科技的日新月异，也难保不会出现更新、破坏性更大的病毒。

　　只是，我们也不需要因为这种趋势而太过悲观，更不用因噎废食地拒绝使用电脑上网。整个电脑发展史上，病毒与杀毒软件的对抗一直不断的持续进行中，只要小心一点，还是可以愉快地畅游在因特网的世界里。

整理自《PCHOME》及"病毒观察"网站

电脑病毒发展历史年表（英文）

http://www.infoplease.com/ipa/A0872842.html

1949

Theories for self-replicating programs are first developed.

1981

Apple Viruses 1, 2, and 3 are some of the first viruses “in the wild,” or in the public domain. Found on the Apple II operating system, the viruses spread through Texas A&M via pirated computer games.

1983

Fred Cohen, while working on his dissertation, formally defines a computer virus as “a computer program that can affect other computer programs by modifying them in such a way as to include a (possibly evolved) copy of itself.”

1986

Two programmers named Basit and Amjad replace the executable code in the boot sector of a floppy disk with their own code designed to infect each 360kb floppy accessed on any drive. Infected floppies had “© Brain” for a volume label.

1987

The Lehigh virus, one of the first file viruses, infects command.com files.

1988

One of the most common viruses, Jerusalem, is unleashed. Activated every Friday the 13th, the virus affects both .exe and .com files and deletes any programs run on that day.

MacMag and the Scores virus cause the first major Macintosh outbreaks.

1990

Symantec launches Norton AntiVirus, one of the first antivirus programs developed by a large company.