Malware in its many forms presents one of the greatest threats to internet users today. Malicious software are programs designed to cause damage, access or monitor a computer, server or network without the users knowledge. These include viruses, worms, trojans, spyware, adware, rogueware, rootkits and other harmful or unwanted software or program. Depending on its type, malware can monitor internet activity, attempt to steal sensitive information, send spam, “hijack” a web browser redirecting search engine attempts and bombarding screen with pop-up advertisements as well as generally impairing computer's performance. The only way to counter these now common threats, apart from isolating it from the internet, networks or any removable data storage devices, is to use an anti-virus program. Learn more about the software that protects your computer from the many threats of the internet age in this book.