Chinese hackers reportedly hit Navy contractors with multiple attacks

Chinese hackers have been targeting US Navy contractors, and were reportedly successful on several occasions over the last 18 months. The infiltrators stole information including missile plans and ship maintenance data, according to a Wall Street Journal report that cites officials and security experts.

Hackers are said to have accessed the systems of multiple contractors. Some of the smaller companies don't necessarily have the resources to secure their networks, according to the report.

Infiltrators reportedly stole plans earlier this year for a "supersonic anti-ship missile" intended for use by US submarines. They're also said to have targeted military research labs at universities. Officials said sources and identifying markers have made it clear China is behind the attacks.