Dual-engine privacy firewall for AI

The AI Privacy Firewall

All AI traffic passes through a privacy firewall. Two detection engines scrub sensitive data before it reaches ChatGPT, Claude, or Gemini.

AI should see context — not your identity.

Dual-Engine Detection
Regex + Deep Learning NER
Response Rehydration
Get full context back automatically
Zero-Knowledge
We can't see your original data

How it works under the hood

Your prompts pass through a privacy firewall before reaching any AI provider.

Browser
Your prompt with PII
Detection Engine
Regex + NER scan
Tokenizer
PII → [TOKEN_N]
AI Provider
Sees only tokens
Rehydration
Tokens → original
INPUT
"Email john@acme.com about the contract"
AI SEES
"Email [EMAIL_1] about the contract"
OUTPUT
"I've drafted an email to john@acme.com..."

See it in action

Watch the privacy firewall protect your data in real time.

Type
Scan
Redact
AI Response
Restore
privaishield
You type:
PII detected in input

Security architecture

Two detection layers, encrypted storage, zero PII to AI providers.

Trust Boundary — Your Device
Your Prompt
Raw input with PII
Layer 1: Regex
19+ patterns, instant
Token Vault
AES-256-GCM encrypted
TLS 1.3
PrivaiShield Cloud (Hybrid Mode)
AWS Comprehend
Deep learning NER
Presidio
Names & context
Smart Filter
False positive removal
Sanitized Only
AI Provider (Untrusted)
ChatGPT / Claude / Gemini
Receives only tokenized text — cannot reconstruct PII

Compliance ready

Built for regulated industries. Documentation included.

HIPAA

HIPAA Compliant

PHI redacted before reaching AI. Satisfies Safe Harbor de-identification under §164.514(b).

18 HIPAA identifiers removed
BAA available for teams
View BAA
GDPR

GDPR Ready

Personal data anonymized before AI processing. Data minimization by design.

No cross-border PII transfer
DPA available
View DPA
SOC 2

Enterprise Security

Built on AWS with encryption at rest and in transit. Audit logging for compliance.

AES-256-GCM encryption
Full audit trail
Security docs
Browser Extension

Works with your existing AI

Add the privacy firewall to ChatGPT, Claude, or Gemini.

ChatGPT

Intercepts messages before they reach OpenAI. All GPT models supported.

Works with existing subscriptions

Claude

Protects prompts to Anthropic's Claude. All tiers supported.

Works with existing subscriptions

Gemini

Redacts PII from Google Gemini messages.

Works with existing subscriptions
Built by Appvergence LLC

Questions? admin@privaishield.com

Start free, pay as you grow

Get 5,000 free tokens to start. Buy more when you need them, or subscribe for AI models included.

Bring Your Own AI

Use with ChatGPT, Claude, or Gemini

Already have an AI subscription? Use the extension to protect your prompts. You only pay for redaction tokens — not for the AI responses.

5,000 free tokens to start
Works with your ChatGPT, Claude, or Gemini subscription
Hybrid redaction (browser + server) for best accuracy
Pay only for redaction — AI responses are on your subscription
Buy token packs when you need more
Get Started — 5,000 Free Tokens
AI Models Included
Team Plan

AI + Privacy in one subscription

No AI subscription? No problem. Get GPT-4o, Claude Sonnet, and Gemini Pro included — with privacy built in.

50,000 tokens/seat — redaction + AI responses included
GPT-4o, Claude Sonnet, Gemini Pro — no separate subscriptions
API access to build privacy-first apps
Team management & seat billing
HIPAA BAA & GDPR DPA included
$49/seat/month7-day free trial
Start Free Trial