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UNC3886 – China-Linked Espionage Hits Singapore's Telcos
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Singapore's Cyber Security Agency attributed a sophisticated espionage campaign against all four major telcos — M1, SIMBA, Singtel and StarHub — to the China-nexus group UNC3886. Active since around July 2025, the attackers exploited Fortinet and VMware zero-days plus advanced Linux rootkits to hold persistent access for close to a year before being evicted. The response, Operation Cyber Guardian, ran more than eleven months with 100+ defenders. Officials found no evidence that customer…
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