Lockheed Martin headquarters is Bethesda, Maryland
Source: Press TV
US defense contractor Lockheed Martin has confirmed that its team detected a threat a week ago and took swift action to protect all systems and data.
"Lockheed Martin detected a significant and tenacious attack on its information systems network," said a company statement, stressing that its systems are now secure, AFP reported.
The US Defense Department says it is working to determine the scope of the attack. It has not so far commented on what information may have been compromised or where the cyber-attack may have originated.
"As a result of the swift and deliberate actions taken to protect the network and increase IT security, our systems remain secure," the statement said.
The Pentagon says the impact on its operations is minimal.
Lockheed Martin - with its headquarters in Bethesda, a Maryland suburb of Washington - is an American global aerospace, defense, security, and advanced technology company with worldwide interests.
It is the world's biggest aerospace company and the Pentagon's number one supplier by sales. In 2009, about 74 percent of the company's revenue came from military sales.
The contractor's network contains technical specifications on weapons under development as well as those deployed in Iraq and Afghanistan.
Lockheed Martin will also design and build a new spacecraft for NASA to carry humans into deep space, the US space agency said last week.