• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI

2

Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 

3

Meet the 20-year-old CEO who launched a company in high school to solve Gen Z's entry-level job crisis

1

Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI

2

Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 

3

Meet the 20-year-old CEO who launched a company in high school to solve Gen Z's entry-level job crisis
Australia
Asia

Australia’s second-largest telco loses its CEO after a network outage that hit almost 40% of the country’s population

By
Lionel Lim
Lionel Lim
Asia Reporter
Down Arrow Button Icon
By
Lionel Lim
Lionel Lim
Asia Reporter
Down Arrow Button Icon
November 20, 2023, 2:33 AM ET
Illuminated signs displayed in the window of an outlet for the Australian communications company Optus.
Illuminated signs displayed in the window of an outlet for the Australian communications company Optus.David Gray—AFP via Getty Images

Millions of Australians woke up on the morning of Nov. 8 to find that their phones were completely useless. An unplanned outage from nationwide provider Optus hit customers in the middle of their morning commute and extended throughout the entire day, throwing several systems into chaos. Businesses couldn’t process electronic payments, hospitals couldn’t take phone calls, and public transport was delayed. The downtime affected some 10 million Australians, equal to about 40% of the country’s population.

Recommended Video

Now, the outage has claimed its first head, as Optus CEO Kelly Bayer Rosmarin resigned Monday following a critical report from the Australian Senate. Her resignation puts an end to an eventful tenure as the head of Australia’s second largest telecoms company, owned by Singapore Telecommunications, also known as Singtel.

Bayer Rosmarin said in a statement released by Singtel on Monday that she has had time for “personal reflection” and her resignation is in the “best interest of Optus moving forward”.

In that statement, Singtel said Bayer Rosmarin led Optus during a “challenging period,” and that Optus delivered improved financial performance and market share gains under her tenure.

Bayer Rosmarin was appointed CEO in April 2020 and the Nov. 8 outage was the second national scandal under her leadership. She had spent a year as deputy CEO and was previously at the Commonwealth Bank of Australia.

Last September, hackers breached Optus, exposing personal customer details in what some described as the worst data breach in the company’s history. The company admitted that addresses, drivers’ licenses, and passport numbers may have been revealed in the data breach. In April, 100,000 people joined a class-action lawsuit against Optus regarding the hack.

Then, on Nov. 8, an outage left millions of Optus mobile and internet customers without connection. The nationwide outage started at around 4:00am local time; connectivity to the majority of the network was only restored around 6:00pm late that day.

A Senate inquiry on Friday revealed that Optus had not planned for a network-wide outage and therefore had no backup in place. Bayer Rosmarin also said on Friday that Optus had received customer claims of about $282,000. The company believes a software upgrade at its corporate parent, Singtel, caused the outage.

Singtel said it understood the need for Optus “to regain customer trust and confidence,” Group CEO Yuen Kuan Moon said in a statement on Monday. “We view the events in recent weeks very seriously. We fully recognize the importance of Optus’ role in providing connectivity services to the community and the importance of network resiliency and security,” he continued.

Singtel is creating a new role of chief operating officer at Optus, which will be filled by the company’s former business managing director, Peter Kaliaropoulos.

Optus chief financial officer Michael Venter will take over at the Australian telco’s interim CEO while the company conducts a global search for a new head. Like his erstwhile boss, Venter is also from the Commonwealth Bank of Australia prior to joining Optus in March 2021.

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Author
By Lionel LimAsia Reporter
LinkedIn icon

Lionel Lim is a Singapore-based reporter covering the Asia-Pacific region.

See full bioRight Arrow Button Icon

Latest in

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in

U.S. allows Russia oil sales waiver to expire despite tight market
EnergyOil
U.S. allows Russia oil sales waiver to expire despite tight market
By Jennifer A. Dlouhy and BloombergMay 16, 2026
7 hours ago
AI poised to tilt job market leverage toward older workers
AIHiring
AI poised to tilt job market leverage toward older workers
By Victor Swezey and BloombergMay 16, 2026
7 hours ago
U.S., Iran stall on Hormuz reopening as oil supplies tighten
PoliticsIran
U.S., Iran stall on Hormuz reopening as oil supplies tighten
By Skylar Woodhouse, Jeff Mason, Arsalan Shahla and BloombergMay 16, 2026
7 hours ago
Former top Russian official admits the country is over Putin and can ‘imagine a future without him’ — even elites bail as Kremlin seizes their assets 
PoliticsRussia
Former top Russian official admits the country is over Putin and can ‘imagine a future without him’ — even elites bail as Kremlin seizes their assets 
By Jason MaMay 16, 2026
8 hours ago
Trump’s IRS suit may end with a $1.7 billion compensation fund
PoliticsDonald Trump
Trump’s IRS suit may end with a $1.7 billion compensation fund
By Zoe Tillman, Chris Strohm, Hadriana Lowenkron and BloombergMay 16, 2026
10 hours ago
World’s largest aircraft carrier returns from 11-month deployment, longest since Vietnam, after supporting Iran war and Maduro raid
PoliticsMilitary
World’s largest aircraft carrier returns from 11-month deployment, longest since Vietnam, after supporting Iran war and Maduro raid
By The Associated PressMay 16, 2026
10 hours ago

Most Popular

Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI
AI
Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI
By Jake AngeloMay 16, 2026
18 hours ago
Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 
Politics
Former top Russian official admits the country is over Putin and can 'imagine a future without him' — even elites bail as Kremlin seizes their assets 
By Jason MaMay 16, 2026
8 hours ago
Meet the 20-year-old CEO who launched a company in high school to solve Gen Z's entry-level job crisis
Future of Work
Meet the 20-year-old CEO who launched a company in high school to solve Gen Z's entry-level job crisis
By Jake AngeloMay 16, 2026
22 hours ago
The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
Politics
The Bezos family just donated $100 million to help achieve one of Mayor Zohran Mamdani’s top campaign promises
By Jake AngeloMay 12, 2026
4 days ago
Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that
Success
Despite having a $165 million net worth, Scarlett Johansson says work-life balance doesn’t exist—and the first step to success is admitting that
By Preston ForeMay 13, 2026
4 days ago
‘You’re not a hero, you’re a liability’: Shark Tank’s Kevin O’Leary warns Gen Z founders to stop glorifying hustle culture
Future of Work
‘You’re not a hero, you’re a liability’: Shark Tank’s Kevin O’Leary warns Gen Z founders to stop glorifying hustle culture
By Jacqueline MunisMay 16, 2026
18 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.