The more personal information you reveal in cyberspace, the more in danger you are putting yourself in. Cyber criminals and sneaky weirdo strangers will use everything they know about you to trick and harm you. You must always be on your guard, cyber defenders! Even the littlest things that seem so harmless can be dangerous to share over time. You can refer to Hint Sheet #2 from the Personal Information Training Mission for a list of examples of personal information that can be used to identify or find out where you are.”]
Source: http://www.carnegiecyberacademy.com/facultyPages/communication/personalInfo.html