Parents are being warned to think twice before posting back-to-school photos of their children online.

There is a dark side to the pictures proud parents post of their kids, according to CyberSafeIreland.

It's important to document special moments with your children, but you should be careful, said CEO Alex Cooney.

"Thinking about what you are sharing in that photograph, you're often sharing a name but also how old your child is, because it might be the first day of school," he said, speaking to the Irish Independent.

"You're revealing where they go to school, and consequently, where you live," she said.

"If you haven't turned off your geo-location settings, you could be revealing exactly where you live.

"That's a lot of information to be putting out in the public domain."

"A key message we give to children is to not share too much information and be really careful about the digital footprint they are creating, because obviously that could affect them in the years to come," she said.

"We know employers and colleges look at your online profile, these things do have an impact in the future, and some things you may be able to delete and some you may not."

Sharing photos via email or through private messaging group is a good way of sharing with friends and relations, she said.

"Of course, if you have your privacy settings absolutely tight you may only be sharing with friends but you don't know if they will share on," she added.

"There are people out there who are looking for this information, who want to put a picture together," she said.

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