A fourth person has been confirmed dead following an Optus technical update bungle. The Western Australian is believed to have tried to call emergency services, but was unable to get potentially life-saving help. Optus announced on Saturday evening that WA police had confirmed a fourth fatality. The 68-year-old woman from Queenstown in Adelaide’s west died after an Optus firewall upgrade prevented her from obtaining potentially life-saving emergency services. In the more than 10 hour-long outage from about 12am on Thursday, up to 600 Optus customers were unable to ring triple-0.