Microsoft Presidio is an open-source framework for privacy-preserving data access. It detects and protects sensitive information—names, phone numbers, credit card data, national IDs—inside structured and unstructured text. It does this with built-in PII detection models and customizable analyzers, letting you adapt rules for any domain or compliance requirement.
Presidio’s core components are Analyzer, Anonymizer, and Recognizer Registry. The Analyzer scans data for personal identifiers using NLP pipelines and regex rules. The Anonymizer masks, scrubs, or replaces findings using formats you control. The Recognizer Registry manages detection logic, making it easy to extend with custom recognizers that combine statistical models, context words, and confidence scores.
This architecture supports privacy-preserving workflows at scale. Data flows from raw sources through the Analyzer into the Anonymizer, with no exposed PII leaving your control. Presidio processes text, images (via OCR integrations), and even streaming data, ensuring that every token is handled consistently.