Meriton is the latest company to report a large data breach, warning 1900 staff and guests that personal information may have been accessed by cybercriminals.
The company, which is known for its property development activities and serviced apartment accommodation operation, has confirmed to the ABC it was attacked more than two months ago on January 14.
The stolen data is believed to include personal information such as bank details, birth certificates and employee-related details such as salary information and HR issues.
Meriton also told the ABC it doesn't believe any of the exposed information has been misused.