Personally identifiable information ( PII ) is data that can identify an individual. To avert misuse, PII is protected by legislation and regulations worldwide. Personally identifiable information (PII ) is data that could identify a specific individual. Learn how to protect this critical category of data. What is the full form of PII ? - Personally Identifiable Information - Personally Identifiable Information ( PII ) is any information that can be used to identify, contact, Sensitive Personally Identifiable Information ( PII ) can include important details like your full name, Social Security Number (SSN), driver’s license, address, credit card, passport, and financial, and medical information.