Lynch speculated that these countries could use the data to blackmail and recruit American government workers, or obtain "undue foreign influence" on US policy. He also imagined a scenario where hostile countries could use the data to profile everyday US citizens for the sake of future diplomatic and military battles.
Apple and Google haven't commented so far.
There's no clear evidence that companies like these have sent sensitive info to less-than-friendly government agencies. TikTok owner ByteDance, for example, has maintained that its US operations are detached from those in China. However, that hasn't satisfied critics concerned about China's influence, such as TikTok temporarily pulling a video highlighting China's mistreatment of Uighur Muslims. The US government went so far as to make Kunlun sell Grindr by June 2020 to eliminate any questions of security risks. Apple and Google won't necessarily be forced to reveal foreign roots for mobile apps, but they'll undoubtedly be under pressure to explain their roles in distributing those apps.