At Harvard, computer officials say they expect few changes in coming months, except for the constant security upgrades they ordinarily make.
"We have to make adjustments constantly," Steen said. "We have to stay a day ahead."
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But so far, Harvard computers have been secure.
"You think you write your e-mail and you're comfortable with that, but behind the scenes some people are trying to shut it down," Steen said. "We watch each one of these things."