At a House committee hearing, FBI Director Christopher Wray said China has stolen more American data “than every other nation combined”, according to The Hill.

“China’s vast hacking program is the world’s largest, and they have stolen more Americans’ personal and business data than every other nation combined,” said Christopher Wray.

The FBI director emphasized that the US has “national security concerns” related to China. In addition, Wray cited the proliferation of TikTok, which is run by Chinese company ByteDance, as one of the main intelligence concerns.

“They include the possibility that the Chinese government could use to control data collection on millions of users or control the recommendation algorithm, which could be used for influence operations if they so chose or to control software on millions of devices, which gives the opportunity to potentially tactically compromised personal devices,” Wray said of the problems TikTok poses.

There are still unresolved questions about data sharing between Chinese companies and the government, “and there are a number of concerns about what’s actually going on and what’s actually being done,” Christopher Wray added.