Optus is yet to provide government agencies with information about affected customers following a massive data breach potentially impacting millions of Australians.
In a statement on Sunday, the Albanese government called on the telco to help it protect those affected from fraud.
Services Australia wrote to Optus on Tuesday asking for the full details of all customers who had their Medicare cards or Centrelink Concession Cards compromised in the hack in order to bolster security measures.
