Before examining your spyware removal options, first try to understand how it arrives in your computer. Spyware can latch onto a computer while you are surfing through certain, insecure web sites. Other infections are slyly installed with your approval when you downloaded and install programs off the internet. Once a computer has been infected with one or more of the various spyware applications your personal information and computer usage is tracked, recorded and used against you. The information spyware applications can gather about you is most often used for bombarding your with advertisements in numerous ways. Worse case scenarios of spyware infection can lead to identity or credit card theft and fraud. Computers will show some signs of infection, but only if the invading spyware application is of the kind that causes physical changes on the computer. These types of spyware will cause browser crashes and changes on the browser start page. An unusually large amount of pop-ups appearing on a computer is most likely a sign of spyware infection. Even if no signs of spyware are prevalent, chances are if the computer has been accessed to the internet, there is some sort of spyware infection, even if it is as small as a tracker cookie. To rid your computer system of current spyware infections and guard it against repeats, a proven and effective anti-spyware or spyware removal program is needed. Some computer users are satisfied with the work free spyware removal tools do, but in case more thorough work is necessary, tough anti-spyware programs can be purchased. One of the most used free spyware removal tools is the latest Spybot Search and Destroy download. With this program you get a full system scan that detects infected files and compiles a list for your review. Spybot can remove or replace infected files and the newest program offers preventative protection to avoid future infections.