Singtel Optus Pty Limited is an Australian telecommunications company headquartered in Macquarie Park, a suburb in the Northern Sydney region of Sydney, New South Wales, Australia. It is a wholly owned subsidiary of Singaporean telecommunications company Singtel.
Communications watchdog suing Optus over data breach
Some 10 million customers had their information stolen in what was one of the worst cyberattacks in Australian history.
Sydney Morning Herald