SINGAPORE - Telecommunications outages pose far-reaching risks to national infrastructure, experts warn, as recent Singtel disruptions left users without critical digital services for hours.
A man typing on his phone while using the laptop. (File photo: IStock)
Singtel customers faced connectivity issues across four days in March 2026 due to a mechanical fault and a software bug from a prior IT upgrade. CEO Ng Tian Chong confirmed the incidents were unrelated but acknowledged their impact on daily life and business operations.
Experts stress that mobile networks now underpin essential services-from banking to healthcare-and disruptions effectively cut off access even when the broader internet remains functional.
Professor Anthony Tung of the National University of Singapore urges earlier warning systems via real-time monitoring and AI-powered anomaly detection. Asha Hemrajani, a senior fellow at RSIS, advocates forced failure testing and robust change management protocols.
Cybersecurity executive Camellia Chan emphasizes engineering fundamentals: redundancy, controlled changes, and regular failover drills. She notes that governance-not just technology-determines recovery speed and accountability.
Singapore’s telcos are high-value cyber targets. Earlier this year, all four major providers were probed by threat actor UNC3886, though no customer data was reportedly compromised. The government is now equipping critical infrastructure owners with proprietary threat detection tools developed by the Ministry of Defence’s CSIT agency.
Singtel was fined S$1 million in 2025 for a 2024 landline outage affecting over 500,000 users-including emergency and government services-underscoring the stakes of telecom reliability in a digital society.