Teens posting too much personal info on social media, survey shows

Almost half of teens offer open access to their online profile information and most don't ask parents before posting photos to social media, says a new survey on teen online behavior.

"Too many teens still do not really understand the risks and too many teens are posting too much personal information," says Ernie Allen, president and CEO of the National Center for Missing & Exploited Children in a statement.

The survey, a partnership between the center and cable giant Cox Communications, was released as part of the fifth Annual National Teen Summit on Internet Safety held Monday in Washington, D.C.