The airline said the cyberattack occurred on Monday after a cybercriminal targeted a customer call centre and gained access to a third-party customer servicing platform.
Data from over six million customers was compromised in the attack.
The airline said today that no one has come forward claiming to have the data, and they were still working with the authorities to investigate the incident.
Qantas said that it would be in a position by next week to update the impacted customers on the types of information that were contained in the system that was accessed.
It will include specific data for each person, and it will vary from customer to customer.
The airline also reaffirmed that credit card information, frequent flyer numbers and sensitive identification documents like passports were not compromised.
“We know that data breaches can feel deeply personal and understand the genuine concern this creates for our customers,” Qantas CEO Vanessa Hudson said.
“Right now we’re focused on providing the answers and transparency they deserve.
“Our investigation is progressing well with our cybersecurity teams working alongside leading external specialists to determine what information has been accessed.
“We’re finalising a process that will enable us to provide affected customers with more information about their personal information that was potentially compromised.
“We are treating this incredibly seriously and have implemented additional security measures to further strengthen our systems.
“Our customers can be assured that we have the right expertise and resources dedicated to resolving this matter thoroughly and effectively.
“I want to apologise again for the uncertainty this has caused. We’re committed to keeping our affected customers informed with regular updates as our investigation progresses.”
Additional security measures have been put in place for the compromised system. 
