Personally Identifiable Information (PII) refers to any data that can be used to identify an individual, either on its own or when combined with other information.

PII includes details such as names, addresses, phone numbers, Social Security numbers, email addresses, and biometric data.

Many regulations, such as the GDPR and CCPA, mandate strict handling and protection of PII to ensure that organizations collect, store, and process this data responsibly, maintaining privacy and security for individuals.