Sometimes privacy is simple to enforce. While at work or when company is over try password protecting your PC with the screen saver option. To do so, go to the Control Panel (click Start, then select Settings, Control Panel) and double-click on Display. Select the Screen Saver tab and check the Password Protect box. Just don't forget the password!!
Only give out information that is essential
Only give out information that is essential. Many sites offer goods and services over the Web and they often ask for personal information before processing a transaction. If the information is not essential to the transaction do not provide it.
An example would be commercial sites that ask you to fill out some kind of registration or survey when you make your first purchase, or sites offering free services such as Web-based e-mail that may also request information about your income or lifestyle. Don't get in a rush when filling out forms on the web.
If you expect a response, then clearly you should provide enough information for that response. However, you should not provide any additional information.
What are some examples of personal information?
Name, mailing address, e-mail address, or telephone numbers, social security numbers or any information you deem private.
Limit the personal information that you post on the Web
Avoid having your home address, home telephone number, or personal e-mail address posted on the Web, whether that be a chat room, Web page, or other piece of Web content that can be accessed by the general public. If you have to post this kind of contact information, make the effort to have alternative information posted. For example, instead of a home address, rent a post office box and use that address. Instead of a personal e-mail address, you can use the address from a free Web-based account instead.
Encrypt before you buy that trip
Before giving out your credit card information online, be sure the web site uses encryption and secure online buying methods to protect your data against third-party viewing. The easiest sign the site is secure and uses an encryption is look at the web address. The http:// you normally see in the address bar will turn to https://. Note the 's' at the end?