How to Keep Your Personal Data Better Protected

Be careful of public hot spots. Turn off your wireless router when not in use. And don't forget to change your router's pre-set password and "NETGEAR" identifier.

Officials say these tips and others are part of "Data Privacy Day," created to remind people about how to keep their personal data private in an increasingly-networked world. Facebook also plans to send a message to users reminding them to review privacy settings on the site.

For her part, Illinois Attorney General Lisa Madigan says many computer users just don't know how vulnerable their information is and what they need to do to protect it.