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Huge Optus network outage spurs CEO of Singapore Telecommunications’ Australia subsidiary to quit

arifnsn November 20, 2023

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The head of Australia’s second-largest telecoms company Optus resigned on Monday, cutting short a more than three-year tenure marred by a massive network-wide outage and one of the country’s largest data breaches.

Parent Singapore Telecommunications announced the resignation of Optus CEO Kelly Bayer Rosmarin days after a network-wide outage left nearly half of Australia’s 26 million people without phone or internet for 12 hours.

Chief Financial Officer Michael Venter will take over as interim CEO, Singtel said in a statement.

An apology message to customers from the Optus website is displayed on a phone in Sydney on November 14. The 12-hour network blackout hit more than 10 million Australians. Photo: EPA-EFE

Rosmarin said she decided to resign after time for personal reflection following a parliamentary hearing on Friday where Optus executives said the company had no contingency plan in place for an outage of that scale.

“Having now had time for some personal reflection, I have come to the decision that my resignation is in the best interest of Optus moving forward,” she said in the statement.

Appointed in April 2020, Rosmarin headed Optus through two national scandals that have tarnished the reputation of the telecoms giant. A massive data hack last year exposed the personal data of 10 million Australians and triggered a class-action lawsuit and multiple investigations from regulators.

Data hack in Australia could cost SingTel US$400 million in profits

The company was dealt a fresh blow earlier this month when a 12-hour network blackout hit more than 10 million Australians, triggering fury and frustration among customers and raising wider concerns about the telecommunications infrastructure.

Optus executives told the parliamentary hearing on Friday the telecoms provider had not foreseen a network-wide outage and so had no backup plan in place.

Rosmarin told the hearing hundreds of calls to Australian emergency hotline Triple-0 failed because of the outage although the telecoms company had followed up all incidents and “thankfully everybody is OK”.

Australia’s Optus restores services after outage affects millions nationwide

Singtel said last week a fault in Optus’ security systems caused the failure, not a routine software upgrade as previously suspected.

Rosmarin increased Optus’ market share and improved financial performance during her tenure, Singtel said in a statement.

“We recognise the need for Optus to regain customer trust and confidence as the team works through the impact and consequences of the recent outage and continues to improve,” SingTel Group CEO Yuen Kuan Moon said in a statement.

Peter Kaliaropoulos was also appointed to a newly created position of chief operating officer.

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