The best way to protect yourself is to use a computer your abuser cannot access!
If you bookmark this or any other site about domestic violence, the fact that you’ve been seeking information may be discovered by anyone, including your abuser. In order to assure your safety, you should either access this site from somewhere other than home or clear all cache, cookies and history files from your browser. There are many different browsers out there, too extensive a list for us to provide directions here for clearing history on each one, so we recommend you review this article from About.com with instructions for clearing your cookies, based on what browser you use.
Even if you follow the directions in the article, your abuser may still be able to see what web sites you have been visiting or what emails you have been sending. If you know that your abuser has access to the computer that you use, the best safety measure to take is to use another computer.