Security News > 2022 > October > Optus confirms 2.1 million ID numbers exposed in data breach
Optus confirmed yesterday that 2.1 million customers had government identification numbers compromised during a cyberattack last month.
In an investigation, Optus confirmed that a total of 2.1 million customers had valid or expired ID document numbers exposed to the hackers.
Of these 2.1 million customers, 1.2 million had at least one number from a current and valid form of identification compromised, and 900,000 had ID numbers exposed but from documents that are now expired.
"Having worked with government agencies to meticulously analyse the data for the company's 9.8 million customers, Optus can confirm the exposed information did not contain valid or current document ID numbers for some 7.7 million customers."
Optus has sent SMS text messages to customers whose ID numbers were compromised in the cyberattack with information on their next steps.
The threat actor had initially attempted to extort Optus with a $1 million ransom demand not to publish or sell the stolen data.
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