Sen. Cory Booker (D-N.J.) said on Sunday that TikTok is collaborating with U.S. intelligence to enact precautions aimed at safeguarding the popular video-sharing platform from Chinese surveillance.“They are now working with U.S. intelligence folks to try to make sure that the proper precautions are taken so the Chinese cannot get access and use it for spying,” he continued.

The recordings, which were reviewed by BuzzFeed News, contain 14 statements from nine different TikTok employees indicating that engineers in China had access to US data between September 2021 and January 2022, at the very least. Despite a TikTok executive’s sworn testimony in an October 2021 Senate hearing that a “world-renowned, US-based security team” decides who gets access to this data, nine statements by eight different employees describe situations where US employees had to turn to their colleagues in China to determine how US user data was flowing. US staff did not have permission or knowledge of how to access the data on their own, according to the tapes.