Security software, such as anti-virus software or anti-spy software, protects against malicious programs such as viruses, spam and malware.
- A virus is a self-replicating program that runs and spreads by modifying other programs or files.
- Spam is the abuse of electronic messaging systems. It is electronic junk mail.
- Malware is a program that is inserted into a system, usually covertly, to compromise the confidentiality, integrity, or availability of the data, application, or operating system.