Pentagon officials claimed that Chinese hackers have accessed designs for more than two dozen advanced U. S. weapons systems that are critical toAmerica’smissile systems, combat aircraft and ships.A report by the Defense Science Board for the Pentagon said that missile defenses and combat aircraft were among the weapons systems whose designs have been hacked, the Washington Post said.The report, titled " Resilient Military Systems and the Advanced Cyber Threat, " called the cyberthreat " serious, " likening the situation to " the nuclear threat of the Cold War. "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 are among the weapons that Washington claims their designs are hacked by the Chinese.According to experts, the electronic intrusions gave China access to advanced technology that could accelerate the development of its weapons systems and weaken the U. S. military advantage in a future conflict, the Post reported.Washington has repeatedly accused Beijing of cyber andhacking attacks against its important data. Chinese officials, however, have repeatedly denied the allegations.China ' s foreign minister rejected accusations that the country ' s military was behind massive hacking attacks on U. S." Anyone who tries to fabricate or piece together a sensational story to serve their political motive will not be able to blacken the name of others or whitewash themselves, " Yang Jiechi said. " We hope the relevant parties will stop irresponsible attacks or accusations. ”Beijing says the accusations of Chinese cyberattacks against the U. S. are inventions intended to vilify China.