"We may also share your information with other members, subsidiaries, or affiliates of our corporate group, including to provide the Platform, to improve and optimise the Platform, to prevent illegal use and to support users. Advertisers, publishers, and measurement and other partners share information with us about you and the actions you have taken outside of the Platform, such as your activities on other websites and apps or in stores."
TikTok shares user data broadly across its corporate group and with numerous third parties including advertisers, measurement partners, and service providers, creating an extensive data-sharing ecosystem.