The suspected hacker released a statement demanding $1.55 million (AUD) in cryptocurrency, claiming to have over three-point-eight million identity document numbers, including drivers licenses and data records. Optus has announced it will be offering a free one year subscription to a credit monitoring service for some of the worst-affected customers. Attorney-General Mark Dreyfus is urging Optus customers to be vigilant and not click on any unverified links from the company.

Attorney-General Mark Dreyfus. Source: Getty