Presidio is a PII detection and anonymization framework designed to identify and mask personally identifiable information in text. It functions as a PII recognition pipeline and a data masking engine, using a combination of machine learning, regular expressions, and rule-based logic to locate sensitive entities.
The system acts as an NER model orchestrator, allowing for the integration of external named entity recognition models and PII detectors to support multi-language privacy scrubbing. It employs a plugin-based recognizer architecture that can be extended with custom recognizers, deny-lists, and specialized detection logic via configuration files.
The framework covers a broad range of data protection capabilities, including automated data redaction, hashing, and encryption. It provides tools for context-aware confidence scoring to reduce false positives and offers a standardized entity mapping system to ensure consistency across different processing engines.