China-linked APT UNC3886 targets Singapore telcos
China-linked group UNC3886 targeted Singapore ’s telecom sector in a cyber espionage campaign, Singapore’s Cyber Security Agency revealed. Cyber Security Agency of Singapore (CSA) and the Infocomm Media Development Authority (IMDA) ran Operation CYBER GUARDIAN to protect the telecom sector. Since July 2025, investigations showed China-linked UNC3886 launched a targeted campaign against all four major […]
Pierluigi Paganini
February 10, 2026
Cyber Security Agency of Singapore (CSA) and the Infocomm Media Development Authority (IMDA) ran Operation CYBER GUARDIAN to protect the telecom sector. Since July 2025, investigations showed China-linked UNC3886 launched a targeted campaign against all four major telcos: M1, SIMBA Telecom, Singtel, and StarHub, aiming at critical infrastructure with deliberate and well-planned attacks.
Source: https://securityaffairs.com/187792/apt/china-linked-apt-unc3886-targets-singapore-telcos.html
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