Top military contractor Northrop Grumman Corp. may have been hit by a cyber assault, the latest in a string of alarming attacks against military suppliers, a source within the company told FoxNews.com.
Lockheed Martin said its network had been compromised last week, and defense contractor L-3 Communications was targeted recently, as well. Both intrusions involved the use of remote-access security tokens, experts say.
On May 26, Northrop Grumman shut down remote access to its network without warning -- catching even senior managers by surprise and leading to speculation that a similar breach had occurred.
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