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Prevent AI Data Leakage
In Real Time

Traditional DLP is too slow for GenAI. PromptFence analyzes and blocks sensitive data inside the browser before the "Send" button is even clicked.

Stop Leaks Now

Why Traditional DLP Fails

Network-based DLP tools inspect traffic after it leaves the device. By then, the prompt has already been sent to OpenAI or Anthropic. PromptFence sits in the browser DOM, intercepting the actual input field.

Network Inspection ❌ DOM Inspection ✅

What We Detect

We use local Regex engines to identify patterns instantly without sending data to the cloud.

  • 💳 Credit Card Numbers (Luhn Validated)
  • 🆔 Social Security Numbers
  • 🔑 API Keys (AWS, Stripe, OpenAI, etc.)
  • 📄 Source Code & Custom Keywords

The Prevention Workflow

1. User Types

Employee pastes a SQL dump into ChatGPT to ask for optimization help.

2. Local Scan

PromptFence detects potential database credentials and PII within milliseconds.

3. Action

The "Send" button is disabled, and a policy warning explains why the action was blocked.

New Feature

Smart Redaction — Don't Just Block, Redact

Instead of stopping AI usage entirely, Smart Redaction automatically replaces sensitive data with placeholders before sending to AI. Users get full AI productivity — emails become [EMAIL], SSNs become [SSN], credit cards become [CARD]. When AI responds, original values are restored automatically.

Automatic PII Detection User-Reviewable Before Send Auto-Restore in Responses

Close the AI Security Gap

Don't rely on after-the-fact logs. Prevent leaks at the source.

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