Optus chief executive Stephen Rue has blamed a firewall update for the Triple-0 outage that led to the deaths of three Australians, including a baby.
Rue at a media conference on Saturday said that a network on Thursday when a “technical failure” impacted some customers ability to ring emergency services.
Rue said the telco was unaware calls to Triple-0 couldn’t be made until a customer contacted them and stopped the upgrade “immediately” when SAPOL rang them.
Three people, an eight-week-old baby in Adelaide’s northern suburbs of Gawler West and a 68-year-old from Adelaide’s western suburbs, and a person in WA, all tragically died after calls to triple-0 failed.
Know the news with the 7NEWS app: Download today 
Optus was most recently was hit by a cyber attack in late 2022, which exposed personal and sensitive information of about 10 million Australians.
An independent review into the botched upgrade has been promised by Rue.
