The act prohibits
> (A) Providing services to distribute, maintain, or update such foreign adversary controlled application (including any source code of such application) by means of a marketplace (including an online mobile application store) through which users within the land or maritime borders of the United States may access, maintain, or update such application.
> (B) Providing internet hosting services to enable the distribution, maintenance, or updating of such foreign adversary controlled application for users within the land or maritime borders of the United States.
With the following relevant definition
> (5) Internet hosting service.—The term “internet hosting service” means a service through which storage and computing resources are provided to an individual or organization for the accommodation and maintenance of 1 or more websites or online services, and which may include file hosting, domain name server hosting, cloud hosting, and virtual private server hosting.
Which I've basically read as "it will be removed from app stores and not be allowed to host content on US servers". Which as a matter of policy seems more than sufficient to reduce the reach of tiktok to a tiny fraction of it's current US user base.
Huawei tried a similar confidence building tactic by paying UK cyber spooks to scour their code to show they don't have backdoors. The so called Huawei Cyber Security Evaluation Centre. Didn't work out for them either.
If TikTok is no longer allowed to be hosted in US, how could they continue the service without transferring the data outside of US? It is going to be a bigger breach if they transfer US user data outside of US, right?