"The current Gambling Act is from 2003. Back then, internet technology was still developing. Lawmakers couldn't have foreseen the way that gambling would develop online 16 years on," DIA said.
The Government department plans to update laws for today's digital world and future-proof them as much as possible.
Murphy supported the review, saying her counsellors were seeing an increase in online gambling in Northland that left cash-strapped families further in debt.
"We get IT specialists to block online gambling sites because there's been instances where the problem gamblers have blocked then unblocked sites. Online gambling is difficult to monitor and control.
"They don't seek help until they are in crisis. Those that play pokies can self exclude themselves from those sites but that can't be done for online gamblers," she said.
She said while local councils may have a sinking lid policy for the number of gaming machines and venues, the policy was not working.
Murphy said problem gamblers that sought help often have other issues that needed to be dealt with such as anger, violence, and a lack of money.
Northlanders spent $9.1m in the first quarter of this year on gambling machines.