China may have the ability to remotely shut down computer systems of US power utilities, aviation networks and financial companies, according to director of the US National Security Agency Mike Rogers.
Testifying to the House of Representatives Intelligence Committee on cyber threats, Rogers said digital attackers have been able to penetrate such systems and perform "reconnaissance" missions to determine how the networks are put together.
Chinese hackers have attacked the US weather satellite network, causing services to be sealed off for a period.
The US regularly accuses China of state sponsored assaults on its businesses, industries and utilities.
The US is currently talking of a cooling in trade hostilities that would ensure the smooth passage of technology sales, but the cyber attack allegations still keep coming. The Washington Post reported that the weather satellite attacks happened in September, but were not revealed until late October.
With the maturity of China's quantum information science and technology, an advanced network that is considered unhackable and will provide the most secure encryption technology is ready to commercialise in China, according to Pan Jianwei, a quantum scientist and professor at the University of Science and Technology of China, Xinhua reported on Tuesday.
Peng Bo, deputy director of the National Internet Information Office (NIIO), said on Sunday that the department will soon launch specific norms to supervise mobile applications in China, according to a NetEase news report on Monday.
He stated that a lack of supervision on apps has left loopholes in the country's internet environment, and that regulating the internet under laws would play a fundamental role during the progress of the country's strive for the rule of law.
Cyber security is an irritant to bilateral ties. On Wednesday the U.S. Federal Bureau of Investigation said hackers it believed were backed by the Chinese government had launched more attacks on U.S. companies, a charge China rejected as unfounded.
In May, the United States charged five Chinese military officers with hacking American firms, prompting China to shut down a bilateral working group on cyber security.