If you suspect your teen is up to some sneaky stuff on the Internet, you're probably right.
A new study by online security software maker McAfee found that 70 percent of teens hide their online behavior from their parents.
Probably not surprisingly...
42-percent of the teens surveyed checked out violent content online and just under a third surfed for porn.
Perhaps more surprisingly...
About one in ten teens hacked into social networks or email accounts.
And about the same number had a face to face meeting with someone they met online.
McAfee says clearing the browser history is the number one way teens hide their online behavior from adults.