Naosuu is a Chrome extension for attorneys that automatically detects and redacts sensitive client data before it reaches AI platforms like ChatGPT, Claude, and Gemini. After the AI responds, Naosuu rehydrates the response locally on-device, so attorneys see complete, useful answers without ever exposing client information to third-party AI servers.

How does Naosuu help with ABA Rule 1.6 compliance?

ABA Model Rule 1.6 requires lawyers to make reasonable efforts to prevent unauthorized disclosure of client information. Naosuu intercepts prompts before they leave the browser, strips identifying client data, and replaces it with anonymized placeholders, so client confidences never reach external AI servers. This supports compliance with Rule 1.6 and similar state bar confidentiality obligations.

Which AI platforms does Naosuu work with?

Naosuu works with ChatGPT, Claude (claude.ai), and Google Gemini. It runs as a Chrome extension and intercepts prompts across these platforms automatically, with no manual steps required from the attorney.

Does Naosuu store my client data?

No. All redaction and rehydration happens locally on your device. Naosuu does not transmit, store, or log client data on its servers. The extension processes everything on-device, so sensitive client information never leaves your machine.

How much does Naosuu cost?

Naosuu costs $9.99 per month or $99.99 per year. A 30-day free trial is available. Team and firm-wide licensing is available — contact us to negotiate.

What types of data does Naosuu redact?

Naosuu detects and redacts client names, case numbers, financial figures, Social Security numbers, contact information, medical data, opposing party details, and other PII and privileged content. The extension uses both regex-based and NER-based detection for comprehensive coverage.

Chrome extension for attorneys

Your clients' data never reaches the AI.

Naosuu detects client names, case numbers, and sensitive data before you hit send, then restores real values in the response on your device only.

The rain never stopped the night this family walked into the alley off Park Row[LOCATION_1],
a detail forever frozen in Gotham City Police Department[ORG_1]’s Case ID #1981-0425-09[CASE_ID_1].
If you pull up that fading incident report from April 25, 1981[DATE_1], the bureaucracy
strips away the horror, leaving only cold facts where a family used to be.
It documents Thomas A. Wayne[PERSON_1], born September 19, 1942[DOB_1], and his wife,
Martha R. Wayne[PERSON_2], born November 04, 1946[DOB_2], both marked with the clinical finality
of “deceased.” They were just a block from the Monarch Theater[LOCATION_2], heading home
toward 1007 Mountain Drive[ADDR_1] in Crest Hill[LOCATION_3], a grand estate that, within seconds,
would become a tomb of quiet hallways.

Move your cursor to protect sensitive information.

Sensitive details replaced. Your context stays intact.

Protect documents before you paste them into AI

Upload a contract, filing, or report. Naosuu extracts and redacts the text on your device before you paste it into any AI prompt.

Upload your file into the pre-flight panel

PDF, Word (.docx), and plain text files are supported. The file is processed entirely in your browser using local libraries. The file is never uploaded to any server.

Review detected entities, same panel, same workflow

Naosuu runs the full detection pipeline on the extracted text. Review entities, dismiss false positives, and add aliases exactly as you would for a typed prompt.

Paste only the redacted version into your AI prompt

Copy the protected text and paste it into ChatGPT, Claude, or Gemini. Only placeholder text enters the chat window. The original document content never leaves your browser.

Read a complete response with real values restored

When the AI's reply references placeholders, Naosuu restores the original values before you read the response, same seamless experience as typed prompts.

Naosuu Pre-Flight

Review detected sensitive information before sending.

✓ Auto-redacted (Vault & Patterns)

These are redacted automatically. You may also add aliases for defined terms.

Preview

The same prompt, before and after

Drag the divider to see exactly what the AI receives vs. what you typed.

What you typedThe rain never stopped the night this family walked into the alley off Park Row, a detail forever frozen in Gotham City Police Department's Case ID #1981-0425-09. If you pull up that fading incident report from April 25, 1981, the bureaucracy strips away the horror, leaving only cold facts where a family used to be. It documents Thomas A. Wayne, born September 19, 1942, and his wife, Martha R. Wayne, born November 04, 1946, both marked "deceased." They were heading home toward 1007 Mountain Drive in Crest Hill. The sole survivor: Bruce T. Wayne, born February 19, 1973.

What AI receivesThe rain never stopped the night this family walked into the alley off [LOCATION_1], a detail forever frozen in [ORG_1]'s Case ID [CASE_NO_1]. If you pull up that fading incident report from [DATE_1], the bureaucracy strips away the horror, leaving only cold facts where a family used to be. It documents [PERSON_1], born [DATE_2], and his wife, [PERSON_2], born [DATE_3], both marked "deceased." They were heading home toward [STREET_1] in [LOCATION_3]. The sole survivor: [PERSON_3], born [DATE_4].

◀▶

See exactly what happens to your data

Every step happens in your browser. Nothing is sent to any server except the redacted prompt, and only to the AI platform you chose.

Built so that even we cannot see your data

Every protection claim below is technically verifiable. This is architecture, not policy.

No AI inside Naosuu

Detection is performed by deterministic rules, regex patterns with checksum validation, and a local NLP library that runs entirely inside your browser tab, the same way a spell-checker works. There is no machine learning model making calls to any external service.

Your prompts never leave your device unredacted

Sensitive values are replaced with placeholders before the prompt is submitted to any AI platform. The substitution happens in your browser tab using local JavaScript. No version of your original prompt, with real names, SSNs, or case numbers, is ever transmitted anywhere.

Naosuu's servers never see your data

The only data Naosuu's server receives while you are using our extension is your email address and a license status flag. That is the entirety of server communication. When you subscribe, Naosuu receives your first name, last name, and email address through Stripe.

The placeholder map is session-only

The table that maps [PERSON_1] back to 'Bruce Wayne' is stored in browser session storage, a temporary memory space that is wiped automatically when you close the tab. It is never written to disk, never synced, and never transmitted anywhere.

Documents are processed locally

When you upload a PDF or Word document, text extraction is performed by local libraries (pdf.js and mammoth.js) bundled inside the extension. The file bytes never leave your browser. No document content is transmitted to Naosuu or any third party.

Open to inspection

As a Chrome extension, Naosuu's code runs in your browser and can be inspected at any time. The network requests the extension makes are limited to: (1) the AI platform you are using, and (2) Naosuu's license validation endpoint, email and status only.

Built specifically for attorneys who use AI

Naosuu was built to close the gap between AI productivity and ABA Model Rule 1.6. Most attorneys know they shouldn't paste client names or case numbers into ChatGPT — Naosuu makes following that rule automatic and invisible, rather than a manual step that gets skipped under deadline pressure.

All detection and redaction runs locally in your Chrome browser. Naosuu's servers never see your prompt text, your client names, or your case data. The privacy policy is written plainly: we collect your email address for licensing, and that's it.

Confidentiality support Supports the "reasonable efforts" standard under ABA Rule 1.6 for protecting client information from unauthorized disclosure.

Zero server-side data processing Redaction and rehydration run entirely in your browser. No prompt text, client names, or case data ever reaches Naosuu's servers.

Works where attorneys already work Compatible with ChatGPT, Claude (claude.ai), and Google Gemini. No workflow changes required — protection is automatic on every prompt.

Seamless round-trip redaction Original values are restored in the AI response before you read it. Attorneys see complete, useful answers — no manual find-and-replace required.

Frequently asked questions

What is Naosuu?: Naosuu is a Chrome extension for attorneys that automatically detects and redacts sensitive client data before it reaches AI platforms like ChatGPT, Claude, and Gemini. After the AI responds, Naosuu rehydrates the response locally on-device, so attorneys see complete, useful answers without ever exposing client information to third-party AI servers.
How does Naosuu help with ABA Rule 1.6 compliance?: ABA Model Rule 1.6 requires lawyers to make reasonable efforts to prevent unauthorized disclosure of client information. Naosuu intercepts prompts before they leave the browser, strips identifying client data, and replaces it with anonymized placeholders — so client confidences never reach external AI servers. This supports compliance with Rule 1.6 and similar state bar confidentiality obligations.
Which AI platforms does Naosuu work with?: Naosuu works with ChatGPT, Claude (claude.ai), and Google Gemini. It runs as a Chrome extension and intercepts prompts across these platforms automatically, with no manual steps required from the attorney.
Does Naosuu store my client data?: No. All redaction and rehydration happens locally on your device. Naosuu does not transmit, store, or log client data on its servers. The extension processes everything on-device, so sensitive client information never leaves your machine. You can read the full privacy policy for technical details on what data we collect and why.
What types of data does Naosuu redact?: Naosuu detects and redacts client names, case numbers, financial figures, Social Security numbers, contact information, medical data, opposing party details, and other PII and privileged content. The extension uses both regex-based and NER (named entity recognition) detection for comprehensive coverage across practice areas.

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