Shielding The Net From Cyber Scoundrels

In 1988, an insidious self-replicating computer virus penetrated the computer system at the University of California's Berkeley campus. Known as the Internet Worm, the virus wriggled out of control for days, corrupting thousands of computers on the Internet. Last February, the Computer Emergency Response Team (CERT) at Carnegie Mellon University, which monitors Internet security, warned network administrators that a band of intruders had stolen tens of thousands of Internet passwords. In July, the Lawrence Livermore National Laboratory conceded that an employee had used its computers to distribute pornography. The number of Internet "incidents" reported by CERT reached 1,300 last year, up from 50 a few years earlier.

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