The Transportation Safety Authority is the latest federal agency to ban the use of TikTok among its employees. The Department of Homeland Security and two U.S. military branches already had discontinued use of the app based on concerns over Chinese data-security and censorship practices. Sen. Chuck Schumer sent TSA administrator David Pekoske a letter to stop its use, citing national-security concerns over how ByteDance, the Beijing-based company that owns the app, uses the data collected by it.
Source: https://threatpost.com/sen-schumer-pushes-for-tsa-employee-ban-on-tiktok-app-at-work/153192/