Overseas scammers have been using forged invoices and fake email addresses to con businesses - and the police are telling businesses to watch out.
The scam, which police first became aware of earlier in the year, was a way of swindling companies out of expensive goods.
The scammers would ask for goods to be sent to a freight company and then send them out of New Zealand while arranging for the bills to be sent to legitimate organisations.
They used the false email addresses and domain names similar to organisations such as DHBs and universities to convince businesses they were on staff there.
Detective Sergeant Michael Cartwright said it was important to be vigilant.