Microsoft Presidio: PII anonymization in LLM pipelines
In one sentence Microsoft Presidio reaches general availability: open source framework for detecting and anonymizing personal data in LLM-processed text, with NER and regex for 50+ entity types.
When a company uses an LLM to analyze emails, contracts, or support tickets, it risks sending customers' personal data (names, tax IDs, card numbers) to external cloud services. This is a serious problem for GDPR and privacy regulations.
Presidio is Microsoft's tool for solving this before data leaves the company perimeter: it intercepts the text, identifies all personal information, replaces it with placeholders or synthetic data, then sends the "clean" text to the LLM.
It supports over 50 sensitive entity types, works in multiple languages, and is integrable as middleware in any pipeline using OpenAI, Azure OpenAI, or other models.
Companies
Microsoft
Tools
Presidio, Azure, spaCy
Tags
Sources