Designs for more than two dozen major U.S. weapons systems have been compromised by Chinese hackers, a U.S report said on Monday, as a news report in Australia said Chinese hackers had stolen the blueprints for Australia's new spy headquarters.
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Citing a report prepared for the Defense Department by the Defense Science Board, the Washington Post reported that compromised U.S. designs included combat aircraft and ships, as well as missile defenses vital for Europe, Asia and the Gulf.
Among the weapons listed in the report were the advanced Patriot missile system, the Navy's Aegis ballistic missile defense systems, the F/A-18 fighter jet, the V-22 Osprey, the Black Hawk helicopter and the F-35 Joint Strike Fighter.
The report did not specify the extent or time of the cyber-thefts or indicate if they involved computer networks of the U.S. government, contractors or subcontractors.
But the espionage would give China knowledge that could be exploited in a conflict, such as knocking out communications and corrupting data, the Post said. It also could speed Beijing's development of Chinese defense technology.
In a report to Congress earlier this month, the Pentagon said China was using espionage to modernize its military and that its hacking was a serious concern. It said the U.S. government had been the target of hacking that appeared to be "attributable directly to the Chinese government and military." China dismissed the report as unfounded.
China has dismissed as groundless both the Pentagon report and a February report by the U.S. computer security company Mandiant, which said a secretive Chinese military unit was probably behind a series of hacking attacks targeting the United States that had stolen data from 100 companies.
In Australia, a news report said hackers linked to China stole the floorplans of a Ae630 million headquarters for the Australia Security Intelligence Organisation, the country's domestic spy agency.
The attack through the computers of a construction contractor exposed not only building layouts, but also the location of communication and computer networks.
Australia security analyst Des Ball told the ABC in the report that such information made the yet to be completed spy headquarters vulnerable to future cyber attacks.
"You can start constructing your own wiring diagrams, where the linkages are through telephone connections, through wi-fi connections, which rooms are likely to be the ones that are used for sensitive conversations, how to surreptitiously put devices into the walls of those rooms," said Ball.
The building is designed to be part of a global electronic intelligence gathering network which includes the United States and the UK, but its construction has been plagued by delays and cost blowouts, with some builders blaming late design changes on cyber attacks.
The ABC report said the Chinese hacking was part of a growing wave of cyber attacks against business and military targets in the close U.S. ally.
It said the hackers also stole confidential information from the Department of Foreign Affairs and Trade, which houses the overseas spy agency the Australian Secret Intelligence Service and had targeted local companies, including steel-manufacturer Bluescope Steel, and military and civilian communications manufacturer Codan Ltd.
The influential Greens party said the hacking was a "security blunder of epic proportions" and called for an inquiry, but the government refused to confirm the breach.
Prime Minister Julia Gillard said the reports were "inaccurate", but declined to say how.
Australian officials, like those in the United States and other Western nations, have made cyber attacks a security priority following a growing number of attacks of the resource rich country, mostly blamed on China.
Despite being one of Beijing's major trade partners, the country is seen by China as the southern fulcrum of the U.S. military pivot to the Asia-Pacific and in 2011 agreed to host thousands of U.S. Marines in near-permanent rotation.
Australia is a major buyer for U.S. weapons systems and is one of the largest overseas customers for the Lockheed Martin manufactured F-35, as well as for Boeing's F/A-18 Super Hornet and associated weapons systems.
Chinese telecommunications giant Huawei was last year barred from bidding for construction contracts on a new Australian high-speed broadband network amid fears of cyber espionage.
The Reserve Bank of Australia said in March that it had been targeted by cyber attacks, but no data had been lost or systems compromised amid reports the hackers had tried to access intelligence on Group of 20 wealthy nations negotiations.