Brown told RNZ the breach was not acceptable.
“I think it’s a very serious breach, it’s not just the large number of New Zealanders impacted, over 100,000, but it’s the nature of the information that has been breached.
“New Zealanders have a right to expect that their data, which is being held by entities, whether public or private, is being held to the highest of standards,” Brown said.
“I think there’s certainly lessons that need to be learned, I think it’s pretty unacceptable what’s happened to be honest.
“I think many New Zealanders will be very concerned about this.”
Manage My Health has said between 6% and 7% of the approximately 1.8 million registered users were impacted.
In an interview with RNZ on Tuesday, Manage My Health chief executive Vino Ramayah said the company was itself also the victim of crime.
He said patients should trust the company “even though we have dropped the ball”, and his own medical records were among those accessed.
On Tuesday, a cyber security expert told RNZ he could not see Manage My Health recovering from the breach.
“Look, this is a big hit on our reputation and I do not disagree with that observation,” Ramayah said.
“But whether we can recover, we’ve got an excellent team, we’ve got an excellent product and we have served Kiwis for a very long time well.
“We’re very confident that we can restore the confidence and we are doing the right thing to ensure that we put providers and patients ahead of our own interests.”
Ramayah said he took full responsibility for what had happened.
“That’s something for after the dust settles, whether I’m the current or continue to be the CEO,” he said.
“I’m not unprepared to step down if there’s a better person who can do a better job than I did.”
– RNZ