EOP 2007 (†708)Johnson, Clay, III. "Memorandum for the Heads of Executive Departments and Agencies: Safeguarding Against and Responding to the Breach of Personally Identifiable Information." (Executive Office of the President, 22 May 2007).
- personally identifiable information (p. 1): "Personally identifiable information" refers to information which can be used to distinguish or trace an individual's identity, such as their 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, such as date and place of birth, mother’s maiden name, etc. (†1623)