Singtel fined $1 million for March network outages
Singtel is trending because the IMDA imposed a $1 million fine for mobile outages on March 16, 18, and 19. The regulator determined the disruptions were within the company's control to prevent and caused significant impact to subscribers.
What happened
- 16 Mar
A chiller system failure at an exchange caused equipment to overheat and shut down, disrupting services for about nine hours [1], [2].
- 18-19 Mar
Intermittent connectivity occurred after 5G traffic was moved to another exchange that had a software bug and a disabled packet optimiser [1], [3].
- 20 Oct
IMDA announced the $1 million financial penalty after concluding the incidents were preventable [1], [2].
What you need to know
The March 16 failure happened because a vendor forgot to reopen a water valve after maintenance and Singtel lacked active monitoring [1], [2].
The outages affected roughly 720,000 business and consumer subscribers [2], [3].
Singtel provided goodwill rebates between $5 and $10 to affected users, totaling $8 million [2], [3].
The company has since improved chiller monitoring and tested its network backup systems [1], [3].
The sources do not specify which particular vendor failed to follow the operating procedures.
Background
Singtel is the largest telecommunications provider in Singapore, serving approximately 4.5 million mobile users [1].
This is not the first penalty for the company; in December 2025, the IMDA fined Singtel $1 million for a separate fixed voice service outage that occurred in October 2024 [1].
Questions people ask
Was the outage caused by a hacker?
No, the IMDA investigation concluded the disruptions were not due to a cyberattack [1], [2].
What services were affected by the disruption?
The outages disrupted essential services including food delivery, ride-hailing, and online payments [1].
Where this came from
[1] straitstimes.com
Singtel fined $1m for three-day outage in March caused by chiller system failure, software bugs
Preview image from straitstimes.com
[2] channelnewsasia.com
Singtel fined S$1 million over mobile service disruptions in March that affected 720,000 users
Preview image from channelnewsasia.com
[3] businesstimes.com.sg
Singtel slapped with S$1 million penalty over March outages affecting 720,000 subscribers
Preview image from businesstimes.com.sg
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