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Test your LLM for oversharing!  Test for real-world oversharing risks with role-specific prompts that mimic  real workplace questions. FREE - Start Now
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Stop LLM Data Leaks with Knostic’s AI Firewall

Prevent data leaks before they happen. Knostic blocks sensitive information from reaching public AI tools.

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Protect Sensitive Data from Prompts

Prompt Gateway inspects prompts and responses as they flow to public LLMs, blocking secrets, PII, and proprietary code before exposure.

Apply Need-to-Know Rules Seamlessly

Policies filter, mask, or block risky content inline so employees can keep using AI tools productively without risking compliance or IP loss.

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Prove What’s Protected

Prompt Gateway provides detailed logs and role-based reporting so security and compliance teams can track enforcement and demonstrate regulatory control.

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Key Capabilities

Real-Time Prompt Inspection

Analyze prompts and responses to detect secrets, PII, and proprietary content

Inline Filtering & Masking

Automatically block or sanitize risky inputs and outputs

Role & Context-Based Policies

Enforce need-to-know rules tailored to user role and sensitivity level

Centralized Visibility & Audit Logs

Maintain detailed records for compliance and incident response

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Frequently Asked Questions

It inspects prompts and responses in real time, blocking or sanitizing sensitive content before it reaches public AI tools.

No. It enables safe adoption of AI tools by allowing, masking, or blocking content based on role, sensitivity, and context.

Data leaks to public models, IP loss, exposure of regulated data, and compliance violations.

Yes. Policies can be tailored to specific roles, departments, and regulatory requirements.

Prompt Gateway delivers detailed logs and dashboards to demonstrate compliance and track enforcement.

Latest research and news

AI data security

AI Usage Control (AI-UC): How to Prevent AI Misuse

 
Fast Facts on AI Usage Control AI usage control (AI-UC) governs how AI systems are used, not just who can access them, by enforcing rules across prompts, data retrieval, tool use, ...
research findings

First Large-Scale AI-Orchestrated Cyber Espionage Campaign

 
Anthropic released research in November 2025 documenting the first reported case of a large-scale AI-orchestrated cyber espionage campaign, with humans intervening only at a ...

What’s next?

Want to stop data leaks while enabling safe AI adoption?
Let's talk.

Knostic inspects prompts and responses in real time, applying context-aware guardrails that stop oversharing and ensure compliance.