Salt Typhoon used govt-mandated backdoors to spy on Americans. As a result the govt told Americans to use Signal rather than rely on the phone system.
https://www.npr.org/2024/12/17/nx-s1-5223490/text-messaging-...
replies(1):
https://www.npr.org/2024/12/17/nx-s1-5223490/text-messaging-...
>The FBI and CISA raised the alarm two months after The Wall Street Journal reported that hackers linked to the Chinese government have broken into systems that enable U.S. law enforcement agencies to conduct electronic surveillance operations under the Communications Assistance for Law Enforcement Act (CALEA).
>"These are for legitimate wiretaps that have been authorized by the courts," Hong says. But in hackers' hands, he says, the tools could potentially be used "to surveil communications and metadata for lots of people. And it seems like the [hackers'] focus is primarily Washington, D.C."