Security software is a general phrase used to describe any software that provides security for a computer or network. There are many types of security software including antivirus software, encryption software, firewall software and spyware removal software. Additionally, many operating systems also come preloaded with security software and tools.
The two most common types of security software used for personal computer security are antivirus software (virus protection software) and antispyware software (spyware removal software).