Murray Olds: Australian correspondent on the fallout from the Qantas system hack - Heather du Plessis-Allan Drive

Qantas says its operations and safety are unaffected by a major cyber hack of its systems, potentially impacting six million customers. 

It's investigating the proportion of the data stolen, and expects it will be significant.

Initial reviews show some customer names, emails, phone numbers, birth dates and frequent flyer numbers were stolen. 

Australian correspondent Murray Olds says the airline has warned impacted customers to be mindful of incoming scams.

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