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Computer Security Resource Center

Computer Security
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personally identifiable information(PII)

Abbreviation(s) and Synonym(s):

Personal Data
Personal Information
PII

Definition(s):

  Information which can be used to distinguish or trace the identity of an individual (e.g., name, social security number, biometric records, etc.) alone, or when combined with other personal or identifying information which is linked or linkable to a specific individual (e.g., date and place of birth, mother’s maiden name, etc.).
Source(s):
NIST SP 800-53 Rev. 4 under Personally Identifiable Information (OMB Memorandum 07-16)

  Any information about an individual that can be used to distinguish or trace an individual's identify and any other information that is linked or linkable to an individual.
Source(s):
NIST SP 800-163 under Personally Identifiable Information (NIST SP 800-122)

  Defined by GAO Report 08-536 as “Any information about an individual maintained by an agency, including (1) any information that can be used to distinguish or trace an individual‘s identity, such as name, social security number, date and place of birth, mother‘s maiden name, or biometric records; and (2) any other information that is linked or linkable to an individual, such as medical, educational, financial, and employment information.”
Source(s):
NIST SP 800-63-2 under Personally Identifiable Information (PII) [Superseded]

  Personally Identifiable Information; Any representation of information that permits the identity of an individual to whom the information applies to be reasonably inferred by either direct or indirect means.
Source(s):
NIST SP 800-79-2 under PII (PL 107-347)

  Any information about an individual maintained by an agency, including (1) any information that can be used to distinguish or trace an individual‘s identity, such as name, social security number, date and place of birth, mother‘s maiden name, or biometric records; and (2) any other information that is linked or linkable to an individual, such as medical, educational, financial, and employment information.
Source(s):
CNSSI 4009-2015 (NIST SP 800-122)

  See Personally Identifiable Information.
Source(s):
NIST SP 800-63-3 under Personal Data
NIST SP 800-63-3 under Personal Information

  ―Any information about an individual maintained by an agency, including (1) any information that can be used to distinguish or trace an individual‘s identity, such as name, social security number, date and place of birth, mother‘s maiden name, or biometric records; and (2) any other information that is linked or linkable to an individual, such as medical, educational, financial, and employment information.
Source(s):
NIST SP 800-122 under Personally Identifiable Information (PII) (GAO Report 08-536)

  As defined by OMB Circular A-130, Personally Identifiable Information is information that can be used to distinguish or trace an individual’s identity, either alone or when combined with other information that is linked or linkable to a specific individual.
Source(s):
NIST SP 800-63-3 under Personally Identifiable Information (PII)

  Any information about an individual maintained by an agency, including (1) any information that can be used to distinguish or trace an individual’s identity, such as name, social security number, date and place of birth, mother‘s maiden name, or biometric records; and (2) any other information that is linked or linkable to an individual, such as medical, educational, financial, and employment information.
Source(s):
NISTIR 8053 under personally identifiable information (GAO Report 08-536, NIST SP 800-122)

  Information that can be used to distinguish or trace an individual’s identity, either alone or when combined with other information that is linked or linkable to a specific individual.
Source(s):
NISTIR 8062 under Personally Identifiable Information (OMB Circular A-130, OMB Circular A-130)