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In 2025, China-linked hackers attacked Singapore’s top telecoms using a zero-day flaw, stealing limited technical data but not customer info or services, prompting a major national response.
In February 2026, Singapore confirmed that four major telecom companies—Singtel, StarHub, M1, and Simba Telecom—were targeted in a 2025 cyberattack by UNC3886, a China-linked group.
The attackers used a zero-day vulnerability to gain access, exfiltrating limited technical data but not customer information or disrupting services.
The breach prompted Operation Cyber Guardian, Singapore’s largest coordinated cyber response, involving over 100 defenders from six agencies.
Authorities emphasized the threat to critical infrastructure and the importance of vigilance, noting no long-term damage occurred.
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En 2025, los piratas informáticos vinculados a China atacaron a las principales empresas de telecomunicaciones de Singapur utilizando una falla de día cero, robando datos técnicos limitados, pero no información o servicios de clientes, lo que provocó una gran respuesta nacional.