Optus app switch services4/1/2023 Optus executives have also warned the attack impacts customers as far back as 2017, so even ex-Optus users should take note. Customers who are concerned about their data can reach out to the telco safely and directly through the My Optus app. 'Optus claims it has now notified the most affected customers of their involvement in the attack, but some less affected customers who only has emails and names leak may not yet be notified. Optus has also identified 17,000 valid Medicare numbers in the exposed records (including a further 26,000 expired Medicare numbers) and 10,000 users with highly sensitive personal information like passport numbers exposed. Optus estimates that up to 9.8 million Australians could have their data compromised due to the attack, with 2.8 million severely impacted. "We invest heavily in our cyber defences, and we really are doing everything we can to ensure that our environment is secure."īecause Optus is collaborating with the local state and federal police, specific details of the case cannot be disclosed to the public just yet, including how exactly the breach occurred. In a statement to the ABC, Optus CEO Kelly Bayer Rosmarin responded, "Our data was encrypted, and we have multiple layers of protection." Home affairs minister Clare O’Neil, on the other hand, asserts the attack was "basic" and has criticised Optus for leaving its systems vulnerable through an unprotected Application Programming Interface (API), which is a computer program that allows software systems to talk to each other. In early October, one Sydney man was been arrested for allegedly using the stolen Optus data in an SMS blackmail scam, though he is not the main suspect behind the initial attack. Rumoured culprits include cyber criminals or state-sponsored hackers. The breach has been described as “sophisticated”, employing multiple European IP addresses that kept changing during the hack. A separate Deloitte investigation has also been commissioned by Optus to discover what happened and why. A criminal investigation by the Australian Federal Police is currently underway looking into the origins of the Optus cyberattack and the methods used by the hackers.
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