Tymnet was also connected to dozens of other public networks in the United States and internationally via X.25/X.75 gateways.
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Tymshare was founded in 1964 as a time sharing company, selling computer time and software packages for users.
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There was a trial of "next-generation" nodes scattered throughout the network, called "TURBO engine nodes" based on the Motorola 68000 family.
With the help of Tymnet, he eventually tracked the intrusion to a call center at MITRE, a defense contractor in McLean, Virginia.