(WHAS11) -- If you suspect your teen is up to some sneaky stuff online, 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.
They also found that 42 percent of the teens surveyed checked out violent content and just under a third surfed for porn. About one in 10 teens hacked into social networks or e-mail accounts and nearly the same number had a face-to-face meeting with someone they met online.
Clearing the browser history is the number one way teens hide their online behavior.