The FBI warned Americans on Tuesday against using foreign-developed mobile applications, especially those made by Chinese developers, saying they can pose privacy and data security risks. The warning came in a public service announcement posted on the bureau’s Internet Crime Complaint Center, which said many popular U.S. apps are developed and maintained abroad.
KEY FACTS
- Advisory The bureau said some apps may collect data continuously, even when users grant limited permissions.
- Data types The report said apps can gather contacts, phone numbers, email addresses, user IDs and physical addresses.
- Storage Some apps state that data is stored on servers in China for as long as developers decide.
- Advice The FBI recommended turning off unnecessary sharing, updating software and downloading verified apps from official stores.
In a public service announcement, the FBI said applications tied to infrastructure in China can fall under that country’s national security laws, which may allow access to users’ data. The advisory also said some apps may not let people use the service unless they agree to data sharing.
The disclosure said some apps collect extensive information by default permissions, including address book details and other personal data. It also said users should report suspected compromise or suspicious activity through the IC3 platform.
The warning comes after China transferred operational control of TikTok’s U.S. business in early 2026 to a majority American-owned joint venture led by Oracle, Silver Lake and MGX to avoid a ban under a 2024 U.S. law. The bureau did not name a single app in its advisory.
WHY IT MATTERS
The warning highlights how mobile apps can collect sensitive data beyond what users expect, especially when permissions and storage locations are unclear. For users, the practical steps are to limit permissions, keep devices updated and install apps only from trusted sources.

