The Firewall for LLMs

Stop feeding your secrets
to the AI models.

The only DLP built for the prompt economy. Automatically scan and redact PII, API Keys, and Customer Data before they leave your browser.

Secures Data On

ChatGPT Claude Gemini HuggingFace Perplexity

The "Ctrl+V" Disaster

09:00 AM: A support rep wants to summarize a difficult ticket thread.
09:01 AM: They copy 500 rows of raw CRM data—containing names, emails, and transaction IDs.
09:02 AM: They paste it into ChatGPT with the prompt: "Summarize these complaints."

The Consequence

OpenAI now possesses your customer records. This is an instant GDPR violation, a breach of trust, and potentially triggers a mandatory breach notification to regulators.

User Intent: Benign (Productivity)
chatgpt.com
AI
I can help with that. Please paste the customer logs below.
Me
PasteGuard Blocked
14 Credit Cards50 Emails
Customer: John Doe, CC: 4532-xxxx-xxxx-xxxx...
Customer: Jane Smith, CC: 4111-xxxx-xxxx-xxxx...
Customer: Bob Jones, CC: 3712-xxxx-xxxx-xxxx...

How PasteGuard works

Zero latency. Zero data exfiltration. 100% local processing.

STEP 1

Clipboard Intercept

When a user attempts to paste into a known AI domain (like chatgpt.com), PasteGuard pauses the event instantly before data enters the input field.

STEP 2

Local Scanning

The clipboard content is scanned against your organization's Regex rules and PII classifiers locally in memory. Data never leaves the device.

STEP 3

Block or Redact

If threats are found, the paste is blocked entirely, or automatically redacted (e.g., replacing emails with [EMAIL]) based on policy.

Real-Time Scanning

Instant pattern matching for SSNs, Credit Cards, and API Keys. Includes semantic analysis for "Customer Lists."

Smart Redaction

Don't just block work. We automatically replace sensitive data with tags so the prompt is safe but usable.

Custom Classifiers

Define custom classifiers for your organization: Product Roadmaps, Code Names ("Project Apollo"), or Pricing.

Forensics & Audit

"Show me who pasted customer data into Claude." Full exportable logs for breach notification.

Enables Compliance With

GDPR
CCPA
HIPAA
SOC 2 Type II
ISO 27001

Common Questions

Do you send the clipboard data to your cloud?

No. All scanning happens locally within the browser extension using WebAssembly. The text content of the clipboard never leaves the user's device. We only receive metadata (e.g. "User blocked 1 SSN") for the admin dashboard.

Does this work on the ChatGPT desktop app?

Currently, PasteGuard is a browser extension and supports Chrome, Edge, and Brave. Support for native OS-level clipboard filtering is coming in Q3.

Can I define my own regex rules?

Yes. Enterprise plans allow you to push custom Regex patterns (e.g. internal SKU formats or Project Codes) via GPO to all employees.

Secure your AI workforce today.

Enable PasteGuard across your entire organization in minutes via GPO/Intune. No heavy agents, no latency.