Optus has released statements offering a free subscription to a credit monitoring service for victims of the hack, shortly after Cybersecurity minister Clare O'Neil called them out in parliament.

The federal government lashed Optus in parliament, saying a company of its size should have had better systems to protect itself and its customers from a significant data breach. 

Dr Katharine Kemp, Senior Lecturer from the Faculty of Law and Justice at the University of NSW told Mark Gibson on Perth Live that more support for the regulator needs to be provided.