The US has planned to expand its Clean Network programme to include China-made cellphone apps and cloud computing services that it claims are security risks.

Pompeo said America wants to ban untrusted Chinese apps from the app stores of US mobile carriers and phonemakers.

His announcement came two days after President Donald Trump askedd Chinese tech company ByteDance to sell its hugely popular TikTok app to an American company or see it shut down by mid-September.

“With parent companies based in China, apps like TikTok, WeChat, and others are significant threats to the personal data of American citizens, not to mention tools for CCP content censorship,” he said, referring to the Chinese Communist Party.

But he added that the US also wants to block American-made apps from being pre-installed, or made available for download, on Chinese-made phones and wireless equipment from global giant Huawei and other makers.

Pompeo added the US government would seek to limit the ability of Chinese service providers to collect, store and process sensitive data in the United States.

He cited specifically Chinese tech giants Alibaba, Baidu, and Tencent.

Washington says TikTok gleans massive amounts of personal data from hundreds of millions of users, which could be passed on to Chinese intelligence.

The targetting of app usage and cloud services expands the 5G Clean Path programme the State Department unveiled on April 29.

At its core, the programme is a multi-country initiative to prevent Huawei and other Chinese telecom suppliers from dominating next-generation or 5G wireless telecom services.

The United States says Huawei technology could open the door for Chinese intelligence to easily tap communications in other countries. To this end, the US government has banned Huawei equipment and strongly discouraged authorities and businesses around the country from using it.