Computers: End of the Ride
Severing the ARPANET
No computer system made a more tempting target for WarGames-style mischief than ARPANET, a Defense Department network linking 5,000 subscribers to 318 giant computers in the U.S. Operated by the Advanced Research Projects Agency to give key civilian researchers access to military computers, ARPANET could also be reached over telephone lines by anyone with a home terminal and the proper phone number. Hundreds of "tourists" have roamed through the system, many of them teen-agers who rode it like a magic carpet to computerland. The network's lines have been used for Dungeons & Dragons duels and its electronic mail system as a dating service. Far more serious, according to officials, attempts to tap into coded classified data have become increasingly bold.
Last week the Government put an end to the joyride. It broke ARPANET into two separate systems: MILNET for military users and R&DNET for civilians. It was the Government's most drastic step to date against computer penetration. "This is a military system," said one Pentagon official. "It's as if we had this expensive car and always left the keys in the ignition."
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