I would argue the source of the information doesn’t matter. The bank disclosed a phone number of a customer to another customer.

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dontdoxxme a day ago | parent [-]

You sound like a crazy person. The actual relevant bit of law is APP 13[1], which has a definition for "holds", which shows the source of the information does matter. If you're going to go and quote half the law, but ignore the actual relevant piece, at least talk to a lawyer.

[1]: https://www.oaic.gov.au/privacy/australian-privacy-principle...

	▲	parisidau a day ago \| parent [-]
		Pardon? Why do you think I sound like a crazy person? Go on, please do. Also APP 13 is tangentially relevant, for sure, but not the crux of it. APP 13 is far less relevant than, for example, APP 11.