Firewall Software and Spyware

Even if your system is infected with spyware, a good firewall can prevent the spyware from transmitting the data it collects back to the people who are using it. Of course, this still means that the spyware is on your system, using your computer´s resources and capacity and potentially reducing its performance. You should run consistent checks on your pc to ensure that no programs are running without your knowledge. There are also legitimate spyware detector programs available but make sure you are purchasing such a program from a reputable software company and not one of those who run scam pop up ads!