Lockheed Martin confirms intrusion, shuts down remote network access

Defense contractor Lockheed Martin (NYSE: LMT) has confirmed that a "significant and tenacious attack" has been carried out against its network. Lockheed employs 126,000 people worldwide and is a major supplier of military equipment, manufacturing some of the most sophisticated U.S. military hardware such as the F-22 Raptor fighter aircraft.

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