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The major Australian internet service provider (ISP) behind Dodo and iPrimus has disclosed a cyber security incident, impacting 1,600 Australian customers.
Vocus is the fourth-largest National Broadband Network provider, beaten out only by Telstra, TPG, and Optus. According to an Australian Competition and Consumer Commission (ACCC) report in June, Dodo and iPrimus had roughly 804,000 NBN network customers.
Vocus disclosed that last Friday (17 October), it had detected suspicious activity on its network, leading to email services being suspended.
“Our technical teams have restored access for email services at 07:00 AEDT for all customers accessing email with Australia,” the company said through the Dodo Facebook page.
Speaking with media, a spokesperson for Vocus later confirmed that unauthorised access had led to over 1,000 email accounts being compromised.
“Our initial investigation has revealed unauthorised access to approximately 1,600 email accounts, leading to unauthorised SIM swaps on 34 Dodo Mobile accounts,” said the spokesperson.
“The SIM swap involved the unauthorised party replacing a customer’s active SIM with a different Dodo SIM purchased from a retail store using a standard industry process.
“We have worked with impacted customers to reverse these SIM swaps, and we continue to monitor this situation.”
Vocus confirmed that by Sunday at 7am, email systems had been restored, but it added that password resets were mandated and that customers would need to call their ISP to change details.
“We continue to update our customers through our website and social media channels and will be offering additional support to our customers through IDCare,” the spokesperson said.
“We apologise for the inconvenience caused by the temporary suspension of email services while we prioritised security.”
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