PII
Abbreviation · Security & Infosec
Definitions
Short for personally identifiable information, data that can identify, contact, or distinguish a specific individual directly or when combined with other information. PII handling is central to privacy compliance, breach reporting, and data protection programs because exposure can harm people in many ways.
In plain English: Information that can identify a specific person.
Example: "The debug logs were reclassified as sensitive after it became clear they contained PII from signup and support workflows."