Key Findings China-nexus cyber espionage group UNC3886 targeted Singapore's telecommunications sector in a deliberate, targeted, and well-planned campaign All four of Singapore's major telecom operators - M1, SIMBA Telecom, Singtel, and StarHub - were targeted by UNC3886 UNC3886 used sophisticated tools, including a zero-day exploit to bypass a perimeter firewall, and deployed rootkits to establish persistent access and conceal their activities Background UNC3886 is an advanc