By MATT KREMKA, Associated Press The U.S. government has begun testing a Chinese-designed firewall that will block millions of websites and applications from connecting to the U.N. Internet, a senior U.K. official said Thursday.

The Chinese-developed firewall, called XIN-XIN, will be used by government agencies and other organizations around the world, including the U-N and U.M.

Bureaucracy in China is now “one of the most critical issues in cyberspace,” said Mark Johnson, the U.-N’s chief information officer.

Johnson said the firewall was developed by a private Chinese company, XINXI, and is being tested in China.

China is currently the world’s top censor, he said.

The U-M.

report did not name the company but said it was working with the Chinese government on the firewall.

The firewall is part of a global network of firewall technology that is meant to make it difficult for governments to access sensitive information, the report said.

Johnson did not say how many websites and other applications will be blocked.

China’s firewall is being developed by XIN XIN, a company based in China, which is known for its internet filtering technology, according to Johnson.

It will be able to block websites and services “which contain sensitive data,” he said, without specifying which sensitive data.

The firewall is designed to block information that might be harmful to national security, human rights, or the economy, Johnson said.

It is being used by the U,M., B and other countries around the globe.

The report did say the firewall has a “significant impact on the ability of U.T.O. organizations to operate as they should.”

Johnson did say that U.L.O., a nonprofit group in London, is currently working with U.F.O.-based XIN to develop a similar firewall, and said he expects XIN will be rolling out the XIN system in the UU over the next two years.XIN has not responded to a request for comment.