The U.S. Department of Commerce said that from Sept. 20 the Chinese mobile applications WeChat and TikTok will be prohibited in the U.S. to safeguard national security.

“The Chinese Communist Party (CCP) has demonstrated the means and motives to use these apps to threaten the national security, foreign policy, and the economy of the U.S. Today’s announced prohibitions, when combined, protect users in the U.S. by eliminating access to these applications and significantly reducing their functionality,” the department said.

The two apps collect vast quantity of data from users, including network activity, location data, and browsing and search histories. “Each is an active participant in China’s civil-military fusion and is subject to mandatory cooperation with the intelligence services of the CCP. This combination results in the use of WeChat and TikTok creating unacceptable risks to our national security,” it added.

President Donald Trump signed executive orders on Aug. 6 to ban the apps and the Department of Commerce had 45 days to identify transactions to protect national security and users’ data. It said that the prohibitions fulfill the president’s direction.