Serious concerns after one of the biggest data hacks in Australasia.

Latitude Finance has revealed around 14 million people across both sides of the Tasman have had personal information held by the company,  stolen.

It includes passport numbers and driver licence details, but it's feared that even more could be involved.

Australian correspondent Donna Demaio told Kate Hawkesby it's much more significant than the initial 300,000 it was first thought to be.

She says some of the data has been held for more than ten years, with Latitude copping some criticism over holding data for so long.

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