As featured on Today Tonight 15th April 2010.
Children need to be supervised.
Erin Cash worked for Queensland police's Paedophile Taskforce ARGOS, disguised as a 12-year-old girl in online chat rooms. She was a lure for predators on the prowl for children.
"There are men and women out there that spend 16 hours a day or more sitting in front of a computer solely preying on our children," Erin said.
Erin says if you don't know how to use a computer, or what your child is up to, you can assume they are being groomed to be offended against - on facebook, on MySpace, even gaming websites.
"If you leave your child unsupervised, it would be the equivalent of allowing a stranger to come into your home and look after your child," Erin said.
Former detective, Brett Lee around the country conducting internet safety seminars. Brett believes education is the key to safety, informing children and parents on the do's and don'ts when surfing the net.
"There are people looking for your information, there are people that want to talk to you, to contact you, but if you don't respond to them, you don't give them information, they can't touch you," he said.
"These guys are almost being arrested on a daily basis in Australia."
Both Erin and Brett say parents should buy an internet content filter and firewall - software to block certain websites and chat rooms which may have pornographic or violent material.
But even then, it's never a substitute for looking over your child's shoulder.
Want to know more about how to protect your children?
Like to know more covert stories and catch a glimpse of the workings of a paedophile?
Would you or your children’s school be interested in a Kid’s Self Defence class?