What is security software?

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.

Read more about security software and keeping security software up to date.

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Content last reviewed on May 14, 2019
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