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Steal This Computer Book 4.0, 4th Edition by Wallace Wang

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Chapter 4. Ansi Bombs and Viruses

I think computer viruses should count as life. I think it says something about human nature that the only form of life we have created so far is purely destructive. We’ve created life in our own image.

STEPHEN HAWKING

In the beginning, personal computers were physically isolated from one another. To share files, people had to copy data onto a floppy disk and then carry that floppy disk over to another computer. This method of sharing files, dubbed the sneakernet (since the data travels via foot power), made sharing information slow and tedious, but it also reduced the threat that malicious software, known as malware, could spread quickly, if at all.

Before the Internet, there were electronic bulletin board systems, ...

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