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spyware

Definitions:

  Software that is secretly or surreptitiously installed into an information system to gather information on individuals or organizations without their knowledge; a type of malicious code.
Sources:
CNSSI 4009-2015
NIST SP 800-128 from CNSSI 4009-2015
NIST SP 800-128 under Spyware from CNSSI 4009
NIST SP 800-53 Rev. 5

  Software that is secretly or surreptitiously installed into a system to gather information on individuals or organizations without their knowledge; a type of malicious code.
Sources:
NIST SP 800-12 Rev. 1 under Spyware

  Software that is secretly or surreptitiously installed into an information system to gather information on individuals or organizations without their knowledge.
Sources:
NIST SP 800-18 Rev. 1 under Spyware

  A program embedded within an application that collects information and periodically communicates back to its home site, unbeknownst to the user.
Sources:
NIST SP 800-28 Version 2 under Spyware

  Malware intended to violate a user’s privacy.
Sources:
NIST SP 800-45 Version 2 under Spyware