The Defence Force is checking to see if any information has been exposed to hackers, after Australian media reports of cyberattacks on contractors in the country's defence supply chain.

Some reports say Iranian-backed hackers posted classified plans of a new infantry fighting vehicle.

Government defence plans call for greater integration with Australia.

"The NZDF is making inquiries to determine if any NZDF information has been exposed," a spokesperson told RNZ.

"We will not be able to comment, until we have ascertained what, if any NZDF information is at risk of being exposed."

Asked if integration increased the risks, they said the Defence Force's "appetite for risk" was determined by NZ Information Security Manual and Protective Security Requirements, which had a process around approving operations.