A Cyberattack on Singtel’s second Branch occurs weeks after the Optus Data Breach

Singapore Telecom said its Dialog unit faced a cyberattack affecting 1,000 current and former employees.

Singapore Telecom Limited said on Monday its Dialog unit faced a cyberattack potentially affecting 1,000 current and former employees and less than 20 customers, weeks after a massive data breach at another Australian unit, Optus.

A hack at Optus, Australia’s second-largest mobile operator, late last month compromised the data of up to 10 million customers, prompting a review of consumer privacy rules to make it easier for companies to share data, communications, and banking.

On Monday, Singtel said the attack on Dialog, an Australia-based IT services consultancy, was first discovered on September 10.

Singtel shares were down 1.6% by 0315 GMT.

The Singapore-based telecommunications company said Dialog’s systems were completely independent of Optus and its NCS unit, and that there was no evidence of any link between the data breach incidents at Dialog and Optus.

Last week, Dialog realized that a “very small sample” of its data, including some personal information of employees, had been posted on the dark web.

Singtel acquired Dialog in April for A$325 million ($206.57 million).

(1 dollar = 1.5733 Australian dollars)

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