US government urges high-ranking officials to lock down mobile devices following telecom breaches

CISA urged senior U.S. officials to lock down their devices in response to ongoing Chinese breaches of multiple telecom providers, recommending Apple’s Lockdown Mode, end-to-end encrypted apps like Signal, phishing-resistant MFA, and telecom account PINs to reduce SIM-swapping risks; the agency emphasized that encryption protects data even if a device is compromised.