Industry publication CyberDaily reported that the personal details of 560 million Ticketmaster customers may have been leaked in a data breach claimed by a notorious hacker group ShinyHunters.
A spokesperson from the Department of Home Affairs told the ABC it is "Working with Ticketmaster to understand the incident".
Cybersecurity expert and director of several IT companies Mark Lukie said the hack will have have major implications for Australian customers.
In September last year, 193,000 Pizza Hut customers' data was leaked when ShinyHunters allegedly accessed their personal information.
Reports of the hacking come a week after LiveNation, which owns Ticketmaster, was sued by the US Department of Justice over claims it is running an illegal live event "monopoly".
The DOJ alleged the ticketing giant's monopoly on the market was driving up prices for fans and pushing out smaller competition.
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