European Stars And Stripes (Newspaper) - December 2, 1988, Darmstadt, Hesse                                Friday december2, 1968 the stars and stripes Page 27 computer intruder leads Dod to sever link with network new York not the Pentagon said wednesday that it had temporarily Cut the connections Between a non Classi fied military computer network and the nationwide academic research and corporate computer network that was jammed last month by a computer Sims program. Department of defense officials said technical difficulties led to the move. But several computer Security experts said they had been told by Pentagon officials that the decision to Cut off the network was made after an unknown intruder Ille Gally gained entry recently to several computers operated by the military and defense contractors. Computer specialists said they thought that the Pentagon had broken the conc clips while they tried to eliminate a Security Haw in the computers in the military network. The department of defense apparently acted after a computer at the Mitre .corp., a Bedford mass., company with several military contracts was illegally entered several times during the past month. Officials at several universities in the United slates and Canada said their computers had been used by the intruder. To reach the Mitre computer. A spokeswoman for Mitre confirmed wednesday that one of its computers had been entered but said no classified or sensitive information had been handled by the computers involved the problem was detected and fixed within hours with no Adverse Conse  Mareia Cohen said. The military computer network known As Milnet connects hundreds of computers run by the military and businesses around the country and is linked through seven gateways to another larger computer net work arpanet. It was arpanet that was jammed last month when Robert to mor Ris a Cornell University graduate student introduced a rogue program that jammed computers on the network. In a Brief statement a spokesman at the defense communication Agency said the to today super station an to Friday s programs. Ooh can Sperti Tom tit. 0700 Abc Gigli up07m Jim Lor Tat Clr Tooni 0740 2�mm zoo ties Between Milnet and arpanet known As mail Bridges Wen severed at 10 . Mon Day and that the connections were expected to be restored by thursday. The defense communications Agency is taking advantage of the Loop Back to determine what the effects of disabling the mail Bridges Are the statement said. The network information Center is collecting user statements and forwarding them to the Milnet  several computer Security experts said they had been old that the network connection which permits military and academic researchers to Exchange information had been Cut in response to the intruder. Several officials said the intruder had shielded his location by routing Tele phone Calls from his computer through several networks. A spokeswoman for the defense communications Agency said that she had no information about the break in. One source said the intruder used a Well known computer Security flaw Loil legally enter the Milnet computers. The flaws Are similar to those used by Morns rogue program. It involves a Utility program called file Transfer protocol that to intended As a convenience to permit Remote users to Transfer data tiles and programs Over the network. The Law is found in computers thai run the unix operating system. The decision to disconnect the Mili tary computers upset a number of com Puter users around the country. Academic computer Security experts suggested that the military May have used the wrong tactic to attempt to Stop the illegal use of its machines. There is a fair amount of grumbling going on said Donald Alvarez an Mit astrophysicist. 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