On November 2, 1988, graduate student Robert Morris released a self replicating program into the early Internet. Within 24 hours, the Morris worm had infected roughly 10 percent of all connected computers, crashing systems at Harvard, Stanford, NASA, and Lawrence Livermore National Laboratory. The worm exploited security flaws in Unix systems that administrators knew existed but had not bothered to patch. Morris did not intend to cause damage. He wanted to measure the size of the Internet. But...
