On December 16, the Pentagon sent a "Cyber Awareness Message" that "identifies the potential risk associated with using the TikTok app and directs appropriate action for employees to take in order to safeguard their personal information," The Guardian reported. The message also advised military personnel to "uninstall TikTok to circumvent any exposure of personal information."
The following week, the Navy banned TikTok from government-owned devices. A Navy bulletin said that members with TikTok accounts who didn't remove the app from devices would be blocked from the Navy intranet. A Navy spokesperson told The Guardian that generally, Navy personnel are allowed to use social media apps, although sometimes specific apps thought to be security risks are banned.