Lockheed Martin fights off cyberattack

TEL AVIV (MarketWatch) – Lockheed Martin Corp. said its information-security staff a week ago fought off a “significant and tenacious attack on its information-systems network.”

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In a late-Saturday statement, the Bethesda, Md., defense contractor LMT +0.35%  said that its systems remain secure and “no customer, program or employee personal data” were compromised in the May 21 attack.

Lockheed Martin has been looking into the matter and has kept the U.S. government apprised of its actions, the company said. It said its staff is working to restore employees’ access to its systems.

The company produces key U.S. military hardware, including the F-16, F-22 and F-35 jets, and sells military equipment globally.

A person familiar with the situation told The Wall Street Journal that many Lockheed Martin employees were required to change their entry passwords.

Hackers may have got past LMT’s defenses by using duplicate SecurID electronic keys produced by the RSA unit of EMC Corp., EMC +0.78%  the paper reported. EMC had said in March that a sophisticated attack on its RSA products had been launched.

Network security has been in high profile in recent weeks after Sony Corp. SNE -1.32%   JP:6758 -3.17%  said that names and addresses of account holders had been accessed in an attack on its gaming-network systems.

Robert Daniel is MarketWatch's Middle East bureau chief, based in Tel Aviv.