"Estonian news providers said on Monday they had been victims of renewed "cyber-attacks."
Delfi news portal news chief editor Tonu Pedaru said the connection to servers abroad was cut on Friday. "From yesterday, Sunday afternoon, the connection has been restored," he told Reuters.
Estonia's computer emergency response team said the Friday attack was a denial of service attack from machines around the world. This involves repeated requests to a Web site, forcing it to crash or be paralyzed. This was the method used in April.
The Estonian events raised the profile of the concept of a cyber war, involving attacks on increasingly vital Internet infrastructure. Military alliance NATO also took up the issue."
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