Four of the Five Eyes intelligence-sharing group urge the public to use encryption for mobile phone messaging and calls.
The joint guide by intelligence and cybersecurity agencies recommends adopting best practices to strengthen network devices against exploitation by hackers, including those affiliated with the People’s Republic of China.
The guide highlights the importance of fully end-to-end encrypted messaging and calls to protect the content from interception.
The FBI and CISA are investigating PRC-affiliated hacks on telecommunications networks and encourage adoption of the guide's practices.