Australian telecoms giant Optus said personal information and at least one valid form of identification of about 1.2 million customers was compromised in one of the biggest cyber breaches the country has faced.
The breach last month by an anonymous online account, which affected 10 million customers, equivalent to around 40% of Australia’s population, attracted harsh criticism from the government.
Optus said the breach also affected expired IDs and personal information of about 900,000 customers. And they clarified that “the exposed information did not contain valid or current document ID numbers for some 7.7m customers”.
The company’s parent Singapore Telecommunications Ltd (Singtel) said it was assessing cost of massive breach at Australia’s second-largest telco.
Optus said it has informed the affected customers about the data breach. After the Australian government urged it to speed up its notification to 10,200 customers. (Whose personal information went public.)
Singtel Optus Pty Limited is an Australian telecommunications company. Its headquarter is in Macquarie Park, New South Wales, Australia. It is a wholly-owned subsidiary of Singtel. Optus is the second-largest wireless carrier in Australia, with 10.5 million subscribers as of 2019.