A major data breach has exposed the private information of up to 3,000 northern NSW residents affected by the 2022 floods.

The NSW Reconstruction Authority (RA) said in a statement the breach occurred in March and involved more than 12,000 rows of data in a spreadsheet from the Northern Rivers Resilient Homes Program.

"Personal information was uploaded by a former contractor of the RA to the Artificial Intelligence platform ChatGPT," an RA spokesperson said.

The statement said once the full scope of the breach was understood, the RA took steps to contain the risk and began working with Cyber Security NSW and forensic analysts.

"We are undertaking detailed investigations to understand what was shared, what the risks are and who from the program is impacted," the statement read.

The Nor

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