The Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning urging Americans to avoid using SMS for two-factor authentication due to vulnerabilities exposed by a recent cyberattack attributed to a Chinese hacking group known as 'Salt Typhoon.' This attack reportedly targeted the personal devices of high-profile officials, including President-elect Donald Trump and Senator J.D. Vance. In response, CISA has recommended the use of encrypted messaging applications such as Signal to enhance communication security. The FBI echoed these concerns, advising the public to adopt stronger security measures, including the use of password managers and timely software updates. The agency's shift in stance comes after it had previously opposed encryption methods, highlighting the growing urgency for improved cybersecurity practices in light of increasing threats.