SearchWords is a toolbar for Internet Explorer that changes web search settings and displays numerous unwanted commercial ads. SearchWords must be manually installed. In actuality SearchWords is a browser plugin which is a computer application that enhances web browser's abilities by adding extra features in it. Some functions, however, can be malicious. Some browser plugins can be very similar to spyware, adware and browser hijackers. Browser plugins can monitor the user's web browsing habits, display pop-up ads, modify the user's web browser's default home and search page without permission, redirect a web browser to another site and change important web browser settings.