Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Personally identifiable information (PII) refers to any data that can be used to identify an individual. This includes information such as names, addresses, social security numbers, or even unique identifiers like IP addresses.
Related terms
Data breach: A data breach occurs when unauthorized individuals gain access to sensitive or confidential information.