The survey showed that 82 percent of parents said they're very knowledgeable of what their kids did online, but a lot children admitted to engaging in inappropriate behavior that their parents had no idea about.
In addition, 44 percent of the children surveyed said they've viewed something that their parents wouldn't approve of, and 34 percent said they lied to their parents about what they did online.
In other alarming survey results, 42 percent of children said they received a personal online message from someone they didn't know, and only 22 percent of parents said they were aware of this.
Around 17 percent of children surveyed said they've gotten an email or online message with pictures or words that made them feel uncomfortable (seven percent of parents said they were aware of this), and 12 percent said they've been a victim of online bullying (6 percent said they didn't know this happened).
With Twitter and Facebook increasing its attempts to secure younger users, parents have their policing work cut out for them.
Experts say parents should increase their efforts by having frank and continuous talks with their children, but also educate themselves on safety controls and how to apply them to their kids' mobile devices. Parents can also visit www.cox.com/takecharge to learn new ways of keeping their children safe from online predators or inappropriate content.
"We applaud the efforts parents are making to keep their kids safe online, but we all must remain vigilant and proactive when it comes to knowing what children are accessing on the web and the devices they are using," said Ernie Allen, NCMEC president and CEO. "Educating parents about the potential risks their children face online and empowering them to take simple preventive steps is critical to helping keep families safe."
Story provided by ConsumerAffairs.