A single line of code can be the point where trust cracks. Microsoft Presidio Runtime Guardrails exist to make sure it never does. They are designed to detect, block, and manage sensitive data in real-time, protecting systems before the data escapes.
Presidio is Microsoft’s open-source framework for data protection. Runtime Guardrails are the active layer — enforcement rules that run alongside your application to catch critical issues instantly. They focus on preventing leakage of PII, secrets, and regulated content across APIs, logs, and user-facing output.
By integrating Presidio Runtime Guardrails, teams gain a checkpoint at the edge of every data flow. The system uses pattern matching, context detection, and customizable policies to identify high-risk content. Once detected, Guardrails can redact, mask, or block the data before it leaves your control. This happens without adding brittle, manual checks deep into code.
Presidio supports multiple recognizers out of the box — email addresses, phone numbers, credit card numbers, social security numbers, and more. Runtime Guardrails extend this by pairing those recognizers with configurable enforcement logic. You decide which content is allowed, which is transformed, and which is stopped cold.