If you are worried about someone knowing which web sites you have visited, you can take several steps to increase your safety when using the internet. The Victim Support site provides a practical guide to safe web site usage. To view this guide, click here (opens in a new window).
The only certain way to prevent anyone finding out which web pages you have been viewing is to use a computer they do not have access to; this could be at a local library, a friend's house, or an internet cafe.