海角大神

The U.S. Commerce Department said Friday it will ban Chinese-owned TikTok and WeChat from U.S. app stores on Sunday and will saddle the apps with technical restrictions that could seriously limit their functionality in the United States.

The order, which cited national security and data privacy concerns, follows聽weeks of dealmaking聽over the video-sharing service TikTok. President Donald Trump has pressured the app鈥檚 Chinese owner to sell TikTok鈥檚 U.S. operations to a domestic company. It is not clear how the latest prohibitions will affect a deal聽recently struck by California tech giant Oracle聽aimed at satisfying U.S. concerns over TikTok鈥檚 data collection and related issues.

Details of the Oracle-TikTok deal, announced earlier this week, were sketchy at best. Oracle was among the pool of bidders, including Microsoft and Walmart, to buy TikTok鈥檚 American operations.

Oracle, in confirming it was the winning bidder Monday, didn鈥檛 refer to the deal as a sale or acquisition, instead saying it was chosen as TikTok鈥檚 鈥渢rusted technology provider.鈥�

TikTok expressed 鈥渄isappointment鈥� over the U.S. government鈥檚 move Friday and said it would continue to challenge Mr. Trump鈥檚 鈥渦njust executive order.鈥� The Commerce Department is enacting an order originally announced by Mr. Trump in August. TikTok sued to stop that ban.

Google and Apple, the owners of the major mobile app stores, did not immediately reply to questions from the Associated Press. Neither did WeChat owner Tencent. Oracle聽also did not reply.

鈥淎t the President鈥檚 direction, we have taken significant action to combat China鈥檚 malicious collection of American citizens鈥� personal data, while promoting our national values, democratic rules-based norms, and aggressive enforcement of U.S. laws and regulations,鈥� Commerce Secretary Wilbur Ross聽said in a prepared statement.

The action is the Trump administration鈥檚 latest attempt to counter the influence of China, a rising economic superpower. Since taking office in 2017, Mr. Trump has waged a trade war with China, blocked mergers involving Chinese companies and stifled the business of Chinese firms like Huawei, a maker of phones and telecom equipment.

China-backed hackers, meanwhile, have been blamed for data breaches of U.S. federal databases and the credit agency Equifax, and the Chinese government strictly limits what U.S. tech companies can do in China.

The order requires WeChat, which has millions of U.S. users who rely on the app to stay in touch and conduct business with people and companies in China, to end payments through its service as of Sunday and prohibits it from getting technical services from vendors that could seriously impact its functions.

Similar technical limitations for TikTok don鈥檛 go into effect until Nov. 12, shortly after the U.S. election. Mr. Ross said early Friday on Fox Business Network that access to that app may be possible if certain safeguards are put into place. TikTok says it has 100 million U.S. users and 700 million globally.

Nicholas Weaver, a computer science lecturer at UC Berkeley, said the actions taking effect Sunday are short-sighted and suggest that 鈥渢he U.S. is not to be trusted and not a friendly place for business.鈥� Users, meanwhile, face a security 鈥渘ightmare鈥� because they won鈥檛 be able to get app updates that fix bugs and security vulnerabilities, he said.

WeChat users have sued to stop the ban, and a federal judge in California appeared sympathetic to WeChat users in a hearing Thursday, but did not issue an injunction against the government. The Justice Department had said in a filing in that case that they would not target WeChat users with criminal or civil penalties for using the app for messaging.

Like most social networks, TikTok, owned by China鈥檚 ByteDance, collects user data and moderates users鈥� posts. It grabs users鈥� locations and messages and tracks what they watch to figure out how best to target ads to them.

Similar concerns apply to U.S.-based social networks such as Facebook and Twitter, but Chinese ownership adds an extra wrinkle because the Chinese government could order companies to help it gather intelligence.

TikTok says it does not store U.S. user data in China and that it would not give user data to the government. But experts say the Chinese government can get any information it wants from companies there.

Republican and Democratic lawmaker concerns about TikTok include its vulnerability to censorship and misinformation campaigns, and the safety of user data and children鈥檚 privacy. But the administration has provided no specific evidence that TikTok has made U.S. users鈥� data available to the Chinese government.

Officials point to the hypothetical threat that lies in the Chinese government鈥檚 ability to demand cooperation from Chinese companies.

This story was reported by The Associated Press.聽

Editor's note: This story was updated at 1:20 p.m.