President Trump has signed an executive order banning transactions with TikTok owner ByteDance from September 20.
The order says that the US "must take aggressive measures against the owners of TikTok to protect our national security."
The date is important, as it is just after September 15, which Microsoft recently set for discussions with ByteDance, when the computer giant is investigating a possible takeover of the Chinese-based company's US operations. When a business comes about, ByteDance no longer has any business relationships in the United States, so TikTok can continue to work there under its new owner.
The order also prohibits transactions with Tencent, China, the owner of the WeChat messaging platform, and a major owner of several well-known video game developers, including a stake in Epic Games, Fortnite's developers. It also has stakes in Reddit, Spotify and Universal Music. It is not yet clear how the order could affect these other companies.
Trump threatened to ban the video sharing app TikTok last week, which has more than a billion downloads worldwide and 175 million downloads in the US, for fear that user data could get into the hands of the Chinese government, although ByteDance always insists passed never happened.
The implementing regulation states that if TikTok data were obtained from the Chinese government, it could potentially "track the locations of federal employees and contractors, create dossiers with personal information for extortion, and engage in corporate espionage."
Digital Trends has contacted the companies affected by this latest executive order and we will update this article as soon as we receive feedback.