Communities are helped to return to normal.

Northland state of emergency lifted but more are likely amid future weather events.

Popular travel website Booking.com has warned customers that their personal information including booking details and names may have been accessed by an "unauthorised third party".

Booking.com is one of the largest digital travel companies globally, with more than 28 million accommodation listings worldwide.

The company sent emails to some of its Australian customers early this morning over what it described as "suspicious activity".

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"We're writing to inform you that unauthorised third parties may have been able to access certain booking information associated with your reservation," the email reads.

"We recently noticied suspicious activity affecting a number of reservations and we immediately took action to contain the issue."

The information accessed could include booking details and names, emails, addresses, phone numbers associated with the booking and "anything that you may have shared with the accommodation".

Booking.com has issued new PIN and reservation numbers to customers it believes have been affected by the data breach.

"The security of your personal information is our utmost priority," the Booking.com email said.

"We will continue to enhance and extend the robust security measures we have in place to secure your reservations with us."

Have you got a story? Contact reporter Lara Pearce at lp*****@******om.au

It also advised customers to take extra security precautions, such as installing antivirus software and being vigilant about clicking on any links sent from Booking.com or their accommodation provider.

Booking.com has been contacted for comment.

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Melbourne's iconic skipping girl sign has been temporarily replaced by a modern 'scrolling girl' in a campaign aimed at highlighting the detrimental impact of excessive screen time on today's youth.

For one week the 90-year-old neon sign affectionately known as 'Little Audrey' will be switched off at its Abbotsford location and swapped with an installation of a girl scrolling on a phone.

The Dairy Farmers campaign aims to encourage children to balance outdoor physical activity with screen time.

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"The fact that we've replaced a play-based childhood with a screen-based childhood has been a disaster for the psychological and physiological well-being of children across the western world," child and adolescent psychologist Dr Michael Carr-Gregg said.

"What we've now got is this sedentary population of young people. It's terrible for their physiological wellbeing but also their psychological wellbeing and we're seeing that in record levels of depression, anxiety, self-harm and of course suicidal ideation.

"It's the biggest public health issue we face with young people today."

Teenagers aged between 13 and 17 are now spending more than three hours on screens, according to fresh research from YouGov.

Parents Adam and Olivia Stawksi said the scrolling girl sign provides a great message for their two boys, aged 12 and 14.

"It's tough for the kids now, but it's a great reminder to ensure the kids are still getting away from their devices when they can …and getting outside and being kids," Adam Stawksi said.

"We're struggling constantly just to find the right balance between having that social connection with their friends but then also being outdoors and being active and having a childhood," Olivia Stawksi said.

The parents admitted they notice a difference in their childrens' mood when they've used their screens.

"It's really hard to draw them away from their devices when they do finally get off, they're a different child really. Their demeanour changes, their attitude changes, they're very snappy," Adam Stawski said.

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"When they come in after playing with friends outside, they're a real joy to be around. It's chalk and cheese really."

Outside School Hours care providers Team Kids has also collaborated in the campaign by offering skipping challenges as part of a special 10 week program.

"Each week there's 7500 skipping ropes that are going to be out there in services and there's going to be challenges each week to improve things like their skip count [and] different tricks you can do with your skipping rope," Team Kids Founder Sam Hoath said.

Global skipping sensation Lauren Jumps hopes the initiative can encourage positive mental and physical health outcome for children.

"I was lucky to grow up in the 90s when we didn't have these distractions… Now I know as an adult how dangerous it is for me to scroll too long," she said.

"It's deeply concerning to think kids have access to that at such a young age.

"With skipping it's a total escape – like you can't be thinking about anything else when you're skipping, because otherwise you'll mess up."

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A rescue operation is under way after a teenager was reportedly swept off rocks and sucked into a notorious blowhole in Sydney's north.

Emergency services were called to the Warriewood blowhole about 1.15pm after a bystander heard screams for help and called Triple Zero.

9News understands the teenage boy was playing near the rocks at the blowhole when he was knocked into rocky waters below.

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Rescuers scaled a steep cliff to reach the boy, aged in his early teens, at the base of a cave below.

It's understood he's suffered multiple abrasions, including cuts to his legs and a head injury.

The boy is expected to be winched from the cave to the top of a cliff shortly.

More to come.

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About 20 diners were evacuated just before 10am as the fire spread.

A judge-alone trial has CCTV footage of a violent gang clash in Mount Maunganui on repeat.

The services index dropped to 46.0 in March, its third straight month of decline.

The letter described the FTA as a ‘strategic necessity’ but NZ First disagrees.

The head of Australia's Navy, Vice Admiral Mark Hammond, will take over as the next Chief of Defence as part of a major overhaul of the Defence Force's most senior roles.

It comes after two of Australia's most senior military leaders – current Chief of Defence Chief Admiral David Johnston and Chief of Army Lieutenant General Simon Stuart – announced their retirement.

Chief of Joint Capabilities Susan Coyle will be taking over as Chief of Army – the first woman to hold the position – while Rear Admiral Matthew Buckley will fill Hammond's shoes as Chief of the Navy.

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In accepting his position this morning, Vice Admiral Hammond said he was looking forward to his new role during "the challenging times ahead".

He also noted that his appointment reflected the "more amphibious" direction that the ADF was taking.

Australia's acquirement of nuclear-powered submarines over the next decade under AUKUS will form a key focus of his position, in a move the government hopes will secure national security as well as drive economic prosperity.

Hammond has been Chief of Navy since his appointment to the role in 2022.

He has served in the navy for the past 40 years, at first in frigates, and then in and later commanding submarines and the Australian Fleet.

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Hammond, Coyle and Buckley will commence in their new roles in July when the current Chief of the ADF, Admiral David Johnston, will step down after more than 48 years in the armed forces.

"The Australian Defence Force is tireless in its efforts to keep Australians safe – and I am so pleased to announce these new appointments," Prime Minister Anthony Albanese said.

"From July we will have the first ever female Chief of Army in the Australian Army's 125-year history."

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