By James T. Areddy 

SHANGHAI--China said it would more closely scrutinize imported Internet technology for vulnerabilities it might pose to the nation's security amid intensifying accusations over hacking between Washington and Beijing.

China's State Internet Information Office said on Thursday that it plans to examine "major products and services" for security risks and deny entry to its $320 billion-plus technology market to businesses with products that fail its tests.

"The vetting is aimed at preventing suppliers from taking advantage of their products to illegally control, disrupt or shut down their clients' systems, or to gather, store, process or use their clients' information, " said the official Xinhua news agency.

China's government didn't say how its inspection process would work nor what types of products and services will be scrutinized.

Major sellers of such products in China, such as Cisco Systems Inc. and International Business Machines Corp., didn't immediately respond to requests for comment.

Technology consultant Zennon Kapron of Kapronasia Shanghai said the move likely wouldn't harden China's position as a technology importer, but said it may lead to more centralized control of government technology-buying decisions that in some cases are now made at a local level.

"It's nothing more than we would expect from any regulator around the world," he said.

The new inspection plan comes three days after the U.S. charged five Chinese military officers with stealing corporate secrets stored online. China denied the accusations and warned of unspecified consequences. It also marks increasing friction between the two governments over cybersecurity: U.S. whistleblower Edward Snowden's accusations that Washington routinely spies on foreign governments including China and U.S. accusations that China has ratcheted up its hacking efforts against U.S. companies and others.

Chinese President Xi Jinping highlighted Beijing's fresh attention to vulnerabilities in February when he took the helm of a new leading group on Internet security.

Virtually all mobile phones and computers used in China, plus the chips that run them, depend on technology developed overseas, a government statement warned this week. "Although the number of Internet users in China reached 618 million people, the structure does not mean the country is an Internet power," said the statement, from China's State Council Information Office.

Jiang Jun, a spokesman for the State Internet Information Office, alleged China has faced widespread "invasion" and wiretapping into systems connected to its government offices, universities, businesses and telecommunication infrastructure, according to Xinhua.

Mr. Jiang said China's attention to the issue was raised by Mr. Snowden's revelations. "For a long time, governments and enterprises of a few countries have gathered sensitive information on a large scale, taking the advantage of their monopoly in the market and technological edge," he said. "They not only seriously undermine interests of their clients but also threaten cybersecurity of other countries."

The Chinese statement said the U.S. Congress has scrutinized Chinese equipment for similar risks, such as embedded technology, and alleged national security risks with products from Huawei Technologies Inc. and ZTE Corp. The companies denied their equipment features such capabilities and said the congressional committee made the statements without proof.

Chinese authorities have made no secret of their desire for the country to develop more technology systems domestically. This month, China said government employees won't be permitted to run Microsoft Corp.'s latest Windows 8 operating system, for instance, as officials announced the development of a homegrown system. Microsoft said it was surprised by the decision, and that it has been working with Chinese officials to make sure its products met the government's specifications.

"Efforts should be made to build our country into a cyberpower," President Xi said in February.

Write to James T. Areddy at james.areddy@wsj.com

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

Cisco Systems (NASDAQ:CSCO)
Historical Stock Chart
From Mar 2024 to Apr 2024 Click Here for more Cisco Systems Charts.
Cisco Systems (NASDAQ:CSCO)
Historical Stock Chart
From Apr 2023 to Apr 2024 Click Here for more Cisco Systems Charts.