The police say the hack caused “significant disruption” and “millions in losses” for TfL.
The event comes as Meta faces ongoing scrutiny over the impact of its products, particularly on children.
Experts tell the BBC what a final deal might look like, and what Beijing might get in return.
Trump said a deal had been approved but Chinese state media did not confirm that an agreement had been reached.
Tyler Blevins says trolls attack him every day for being less popular than he was at the height of his fame.
White House officials claim the deal will be a win for the app’s US users and American citizens.
TikTok says it will introduce measures to “strengthen our platform” although it disputes some of the findings.
Trump says a deal is done but the details have not been confirmed by China or the app’s owner ByteDance.