But keep in mind, it is the government who dictates things like "100 points ID check" and needing to capture the above personal data in order for a tax agent to complete a return on your behalf etc..
It's up to them to change the process so its more secure.
Aside of things like the OAIC Data Breach Scheme and other industry compliance requirements, there is not really any legislation on personal data security that people have to follow.
This cam in a few years ago, basically any business that gets hacked (above >5M rev) must tell the OAIC etc. There are some interesting stats in their annual reports incidentally.
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