Children as young as 10 years old are being targeted for 'sextortion' by sophisticated international criminals.
The online blackmail involves scammers persuading victims to send them sexual images or videos of themselves and then threatening to share them with others unless they pay up.
At least 618 so-called 'sextortion' complaints have been made to NZ police in the past two years.
But Detective Sergeant Dan Wright says many people are reluctant to come forward.
His advice to parents is to talk to your kids, know what platforms they use online, and check those privacy settings.