What is an AI Security Layer?

AI Security Layer: An AI Security Layer is the masking, routing and rehydration layer that sits between an application and AI providers.

Direct provider calls leave no enforcement point for masking, policy, or auditing. The AI Security Layer centralizes that surface so security and platform teams have one place to control AI traffic.

1. Step 1

   Mask

   Personal and sensitive data is detected and replaced with placeholders.

2. Step 2

   Route

   The masked prompt is forwarded to the configured provider with your own keys.

3. Step 3

   Rehydrate

   Placeholders in the response are restored before reaching your application.

• Glossary: LLM gateway
• Glossary: PII masking
• Glossary: Prompt security
• Glossary: LLM security
• Glossary: Zero retention

• Category

  AI Security Layer overview

• Product

  AI Security Layer implementation

• Docs

  AI Security Layer concept

• Architecture

  Privian architecture

• Data path

  What reaches the model

Is an AI Security Layer the same as an LLM gateway?

No. An LLM gateway is the routing component. An AI Security Layer combines a gateway with PII masking, prompt security, rehydration and zero retention.

Where does an AI Security Layer sit?

Between your application and one or more model providers, as a network hop your AI requests flow through.

Does an AI Security Layer change my provider relationship?

With BYOK, no — your contract and billing with the provider stay intact. The security layer routes; it does not resell.