<h1>Critical infrastructure protection: Singapore mounts whole-of-government response to alleged foreign-linked cyberattack, attribution prompts diplomatic denial.</h1> Singapore is conducting a coordinated whole-of-government response to an ongoing cyberattack on critical infrastructure attributed by some cybersecurity firms to UNC3886. Defence, armed forces and the Cyber Security Agency are managing live operations to protect essential services while balancing operational security with public awareness. Ministers justified naming the actor based on assessed disclosure criteria. The Chinese embassy denied state involvement, rejecting the linkage as groundless and expressing readiness to cooperate on cybersecurity.