Up to 10 million customers’ data was stolen in the Optus breach late last month. Following a significant data breach at Australian subsidiary, Optus, Singapore Telecommunications Ltd. reported on Monday that its business Dialog was subject to a cyber attack that may have affected 1,000 current and former workers as well as fewer than 20 clients.
The breach at Optus, Australia‘s second-largest mobile provider, happened late last month and exposed the data of up to 10 million consumers. This led to a revision of consumer privacy laws that would make it easier for banks and telecommunications companies to share specific client information.
Details of the incident
According to Singtel, the attack on Dialog, an Australian company that provides consultancy services in information technology, was discovered for the first time on September 10. Singtel’s stock price was down 1.6% as of 03:15 GMT.
The Singapore-based telecom company guaranteed that there was no evidence linking the episodes of data breaches at Dialog and Optus, and that Dialog’s systems were totally independent of Optus and information technology unit NCS.
Dialog discovered this week that “a very small sample” of its data, including some personally identifiable information about employees, had been made available on the dark web. Dialog was purchased by Singtel in April for $206.57 million.