Banks, telcos and government services have been given new powers to stop theft and fraud after the Optus data breach.
The governor-general has formalised regulations to prevent criminals using stolen data.
The regulations allow telcos to be more transparent with banks to enable limited and targeted data sharing of drivers licence, Medicare and passport numbers.
They will also allow banks and Services Australia to implement enhanced safeguards and monitoring.
The regulations follow last month's Optus data breach, which affected almost 10 million Australians.
Communications Minister Michelle Rowland welcomed the new rules.
She said the regulations were formed after rapid but extensive consultation with the telcos and the financial sector as well as the privacy commission and consumer watchdog.
"These regulations will help to keep Australians safe," she told AAP.
"The amendments remove barriers to Optus sharing compromised government identifiers with financial institutions to help prevent identity theft, fraud, scams and other malicious activity.
"Financial services institutions and Optus are well aware of this, so consumers can expect them to both act expeditiously."
