# Naosuu

## What is Naosuu?

Naosuu is a privacy-first AI redaction tool for attorneys. It is a Chrome browser extension that automatically intercepts prompts before they are sent to AI platforms, redacts sensitive client information entirely on the user's device, and then restores the real values inside the AI's response - so lawyers receive complete, useful answers without ever exposing confidential data to third-party AI servers.

## Core capability

When a lawyer types a prompt into ChatGPT, Claude (claude.ai), or Google Gemini, Naosuu intercepts the prompt in the browser, detects and replaces identifying information (names, case numbers, dates, addresses, financial figures, SSNs, and other PII) with anonymized placeholders (e.g. `[PERSON_1]`, `[CASE_NO_1]`), sends the sanitized version to the AI, and then substitutes the real values back into the AI's response before the lawyer reads it. Everything happens locally, on the user's machine.

## Who it is for

Naosuu is built exclusively for legal professionals - solo practitioners, associates, and partners - who want to use AI tools without violating attorney-client privilege or ABA Model Rule 1.6 (duty of confidentiality). It requires no IT configuration and no firm-wide deployment; it is an individual, browser-level solution.

## How the redaction pipeline works

1. **Interception** - A content script on ChatGPT, Claude, and Gemini intercepts the user's prompt before submission.
2. **Detection** - The extension runs both regex-based pattern matching (case IDs, SSNs, phone numbers, financial figures) and an on-device Named Entity Recognition (NER) model (BERT-based, ONNX runtime, fully local) to identify people, organizations, locations, and dates.
3. **Pre-flight review** - A panel shows the attorney which values will be redacted and what placeholder each maps to. The attorney can approve, exclude entities, or add custom aliases.
4. **Redaction** - Sensitive values are swapped with placeholders. Only the sanitized prompt reaches the AI server.
5. **Rehydration** - When the AI responds, the extension replaces every placeholder in the response with the original real value, so the attorney reads a complete, personalized answer.

## Privacy model

- **Zero server storage**: Naosuu does not transmit, store, or log client data. The company has no access to any client information.
- **On-device processing**: All redaction and rehydration happen inside the Chrome extension on the user's local machine.
- **Vault**: Attorneys can maintain a personal vault of known client names and terms that are always redacted, even before the AI sees a single character.

## Supported platforms

- ChatGPT (chat.openai.com)
- Claude (claude.ai)
- Google Gemini (gemini.google.com)

## Pricing

- Monthly plan: $19.99/month
- Annual plan: $179.00/year
- 30-day free trial, no credit card required at signup
- Individual license only (no firm/team tiers currently)

## Compliance context

Naosuu is designed to support compliance with:
- ABA Model Rule 1.6 (confidentiality of information)
- State bar confidentiality obligations derived from Rule 1.6
- General attorney-client privilege obligations

It is not a substitute for legal advice about compliance; it is a technical safeguard.

## Company

Naosuu LLC
418 Broadway, Ste N, Albany, NY 12207, USA
Website: https://naosuu.com
Contact: info@naosuu.com
Chrome Web Store: https://chromewebstore.google.com/detail/naosuu/gliibfchhnfoinohkkejjcdkjeehnddh