Attorney Client Privilege AI Integration: Protecting Your Case
TEAMS EDITION
Maintain attorney client privilege AI rules when using LLMs. Protect sensitive case data offline before sending legal documents. Includes Flat-rate TEAMS pricing and Zero-server architecture.
Ilya SibiryakovPrivacy Architect
Published: · Updated: · 3 min read
100% Local Processing ✈ Airplane Mode Verified⊘ No Server Logs
AI Summary / Key Takeaways
Verified Zero-Trust Logic
"PrivacyScrubber provides the essential de-identification layer for Legal professionals using generative AI. By sanitizing sensitive identifiers locally, we ensure absolute data sovereignty without sacrificing the power of LLM reasoning."
Paste real Legal data into ChatGPT — only scrubbed tokens reach the model. Names, IDs, and emails stay on your machine.
Works offline: disconnect the network mid-session and it keeps running. Zero cloud dependency.
Your AI gets full context. Your clients' real identities never leave your browser tab.
Enterprise-Grade AI Privacy
Add custom redaction rules and priority support with PRO.
CASE NOTE > Matter: Civ-2024-8891 vs Global Corp
Client: David Vance | Counsel: Sarah Miller
Summary: Preparing deposition for Judge Harris concerning the Acquisition Merger.
CASE NOTE > Matter: [ID_1] vs [ORG_1]
Client: [NAME_1] | Counsel: [NAME_2]
Summary: Preparing deposition for [NAME_3] concerning the [TOPIC_1].
Try PII Masking Live
Highlight any sensitive value below to test our zero-server redaction engine.
Tap any sensitive value below to test our zero-server redaction engine.
Civ-2024-8
Global Corp
David Vance
Acquisition
AI Risk Calculator
50
Risk● Critical
Leaks/yr
9,000
Max Fine
€20M
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Automate Compliance For Your Team
Deploy PrivacyScrubber across your whole organization — custom rules, compliance dashboard, zero logs — $99/mo flat.
The Zero-Trust Imperative: Maintain attorney-client privilege while using Generative AI by redacting sensitive case details locally. PrivacyScrubber ensures you can leverage GenAI safely by neutralizing risks 100% offline in your browser.
What Legal Professionals Send to AI — and What They Should Be Sending Instead
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Protecting workflows for Attorney Client Privilege AI Integration is an operational necessity in modern practice. Integrating platforms like ChatGPT, Claude, Copilot, and AI legal research platforms without input sanitization creates immediate liabilities regarding data retention. Our legal AI privacy guides outlines critical defense strategies to secure the legal boundary, resolving exposing client communications, case strategy, and witness identities to AI training pipelines, which could constitute a privilege waiver and bar discipline violation before any external API receives the prompt.
Pasting unmasked documents or querying third-party AI models with unmasked discovery files risks an unauthorized disclosure under professional conduct rules. Legacy API agreements are not sufficient to protect client files from being logged. For attorneys, paralegals, and legal operations professionals, preventing exfiltration requires local verification at the endpoint. Maintain attorney client privilege AI rules when using LLMs. Protect sensitive case data offline before sending legal documents. Includes Flat-rate TEAMS pricing and Zero-server architecture.
Privacy Insight: Uploading unredacted litigation briefs or case notes to third-party AI models risks the waiver of attorney-client privilege. Local-first de-identification prevents this risk before data ever leaves the local terminal.
Why Legal Compliance Teams Flag Unmasked AI Prompts
Legal oversight is unrelenting: attorney-client privilege (Model Rule 1.6), court confidentiality rules, and state bar ethics opinions on third-party AI use. Yet, daily paralegal workflows demand high-speed summarization. You must navigate this tension securely, relying on protocols outlined in court document protection for ai analysis. The only legally defensible strategy is achieving true zero-transmission of identifying client data. Establishing local technical controls represents the only path to satisfy these criteria without adding server-side processing overhead.
PrivacyScrubber utilizes Zero-Trust Data Sanitization (ZTDS) natively within your browser, offering both a standalone copy-paste workspace and the PrivacyScrubber Chrome Extension for automated workflow integration.
How to Use AI on Real Legal Data — Without Sending a Single Real Name
PrivacyScrubber utilizes Zero-Trust Data Sanitization (ZTDS) natively within your browser, offering both a standalone copy-paste workspace and the PrivacyScrubber Chrome Extension for automated workflow integration. By isolating sensitive legal and personal entities (like [CLIENT_NAME] or [CASE_ID]) in-browser, we help protect client case files and litigation documents never exit your local machine. This mirrors the defensible posture required for enterprise data governance. The Chrome Extension makes this frictionless for attorneys by placing an active shield button directly within ChatGPT, Claude, and Gemini interfaces to redact prompts in-place and detokenize answers automatically. Processing data through browser-based Named Entity Recognition allows safe integration of ChatGPT, Claude, Copilot, and AI legal research platforms for complex tasks while preserving client privacy.
We confirm this zero-transmission approach through the Airplane Mode Standard. By testing the tool with your internet disabled, you verify that no packets are sent. This satisfies the rules in AI DLP solutions for absolute data safety.
Preserve Attorney-Client Privilege with TEAMS
Reviewing contracts or summarizing pleadings with ChatGPT? Under the flat-rate TEAMS plan ($99/mo for unlimited users), your firm can leverage peer-to-peer Zero-Server Session Handoff. Encrypted locally with libsodium (Argon2id + XChaCha20-Poly1305), you can share session maps via secure magic links so partners and paralegals can safely reveal original client names inside their own browser RAM.
Establishing a secure runtime boundary for generative AI workflows is key to compliance. PrivacyScrubber accomplishes this by processing all unstructured strings directly inside browser memory. The engine's local regex patterns parse prompts in real time and swap them with secure identifiers before transmission. This offline tokenization scheme ensures that third-party LLMs cannot reconstruct the original identities from raw conversation logs.
Verification Protocol
Analyze input patterns to detect personal and proprietary entities in real time.
Apply local Named Entity Recognition to tokenize primary identifiers.
Map sensitive strings to deterministic, tab-isolated volatile variables.
Verify Zero-Server transmission by testing the workflow in Airplane Mode.
Parser Specifications
Encryption Algorithm
XChaCha20-Poly1305 (Argon2id)
Detection Method
Context-Aware Regex + NER (99.5% Accuracy)
Data Egress Rule
Zero-Server Egress (Airplane Mode Verifiable)
Classification Standard
Maximum Privacy Guard
Associated Threat Level
Low (Inference Risk)
Preserving Attorney-Client Privilege in AI Workflows
Pasting confidential client notes or witness statements into Claude or ChatGPT to summarize case files is highly efficient for legal professionals. However, under standard Model Terms of Service, uploading unredacted client files can potentially act as a waiver of the attorney-client privilege, risking legal AI privacy.
The Legal Discovery Vulnerability
Unlike static data storage, LLM prompt histories are processed and stored on third-party servers, which may void cyber insurance controls. If a court issues a subpoena for external communications, your unmasked AI logs can become discoverable. This creates two immediate operational liabilities:
Privilege Waivers: Sharing private client strategy or names with external corporate entities waives confidentiality.
Data Breaches: Storing client records on insecure, third-party model provider logs violates compliance protocols.
Zero-Trust Shield: Strip Client Names Locally
PrivacyScrubber resolves the conflict by keeping client identifiers on your local device. The extension and Secure Workspace redact Case IDs, client names, and specific litigation details locally in browser memory. The AI provider only receives generic, tokenized placeholders (e.g., [CLIENT_NAME_1] and [CASE_ID_2]) via our zero-trust agentic architecture to process the underlying legal logic. Once the AI answers, you can restore the original names locally in a single click.
Instant Simulation
Attorney Client Privilege AI Integration Sanitizer
Watch our zero-trust engine neutralize sensitive identifiers 100% locally. No data ever leaves your device.
Local processing 0 Server logs
ZTDS_ENGINE_V1.5.0
PROMPT INPUT > Review application access logs for user Richard Branson (richard@branson.co.uk), phone number: 555-0111.
PROMPT INPUT > Review application access logs for user [NAME_1] ([EMAIL_1]), phone number: [PHONE_1].
Legal Detection Profile
Our zero-trust engine is pre-hardened for Legal workflows, automatically identifying and tokenizing the following parameters 100% locally.
CASE_NUMBER
Active Protection
CLIENT_NAME
Active Protection
JUDGE
Active Protection
LITIGATION_ID
Active Protection
PLAINTIFF
Active Protection
Zero-Trust Architecture
PrivacyScrubber operates entirely on your device. Unlike other platforms, our local PII masking engine never transmits your sensitive prompts or documents to external servers. All detection and restoration happens in your computer's local RAM.
No Backend Connection: Zero API calls, zero tracking, zero logs.
Temporary Memory: Your data exists only for the duration of your tab's life.
Verification Ready: Built for professionals who need to audit their security layer with AI DLP solutions.
Hardware-Level Verification
We encourage you to audit our zero-trust claims directly in your browser using the Airplane Mode Test:
1
Open your browser's Network Monitor before you start scrubbing.
2
Switch to Airplane Mode (physical or simulated) and protect your text.
3
Verify that no data packets ever leave your machine.
ChatGPT (OpenAI) Integration
How to Protect Data for Attorney Client Privilege AI Integration
PrivacyScrubber operates entirely client-side. Whether using the copy-paste dashboard or the browser extension, your sensitive records stay on your local device. Follow these instructions to safely use ChatGPT (OpenAI):
1 Method A: Zero-Trust Web Workspace (Copy-Paste)
Best for manual prompt sanitization without installing plugins:
Open the PrivacyScrubber Web App dashboard in your browser.
Paste the raw prompt or document text containing sensitive customer, employee, or proprietary identifiers.
Click Protect PII. Sensitive data is instantly swapped for secure placeholders (e.g., [NAME_1]).
Submit the sanitized prompt to ChatGPT (OpenAI).
Paste the AI's answer into the Reveal Originals box to instantly restore the original values.
For automated, inline de-identification within chat interfaces:
Install the free PrivacyScrubber Chrome Extension from the Web Store.
Navigate to your AI chat interface. A PrivacyScrubber shield button will appear inline.
Paste your raw prompt. Click the shield button to sanitize all identifiers instantly in-place.
Send the prompt to the AI chatbot.
The extension automatically intercepts and detokenizes the response, displaying raw values to you.
Local Redaction & Risk Matrix for Legal
Detection Entity
Token Placeholder
Risk Level
Security Action
Legal Case / Docket Numbers
[CASE_NUMBER]
Critical (Discoverable records)
Litigation pattern swap
Client / Plaintiff Names
[CLIENT_NAME]
Critical (Attorney-Client Privilege waiver)
Multi-tiered name filter
Judges / Arbitrators Names
[JUDGE]
Medium (Litigation profiling)
Contextual name redact
Litigation Matter Identifiers
[LITIGATION_ID]
Critical (Privileged case data)
[ID_N] local replacement
Plaintiffs & Opposing Counsel
[PLAINTIFF]
High (Privilege waiver risk)
Entity name isolation
VERIFIABLE WORKFLOW
From Raw Legal Data to Clean AI Prompt
3 Steps, 30 Seconds, Zero Server Hops.
Open PrivacyScrubber or the Chrome Extension. Paste your raw prompt or document text. What reaches ChatGPT looks like this: [NAME_1][EMAIL_1]. Your original data stays local the entire time.
1
Paste Your Real Data
Paste your actual prompt or document text into PrivacyScrubber — or click the shield icon directly inside ChatGPT, Claude, or Gemini. No copy-paste workaround. No second tab. It sits right where you already work.
The engine runs inside your browser. Every real name, ID, and email is replaced with a safe token ([NAME_1], [EMAIL_1]) before the prompt is sent. The AI analyzes your actual business logic — but sees zero real identities.
Safety standard:
Airplane Mode Verified (RAM Only)
3
Get the AI's Answer Back in Plain Language
Paste the AI's response into Reveal Originals. PrivacyScrubber swaps every token back to the original value — instantly, inside browser RAM. Close the tab and every mapping is gone. Nothing stored, nothing logged, nothing sent.
Privacy Guarantee:
Mapping destroyed on tab close
Legal Adoption Use Cases
Managing Partner & General CounselATTORNEY PRIVILEGE
Zero-Trust Verified
Protects attorney-client privileged memos and settlement terms during AI-assisted contract analysis, ensuring work-product doctrine remains intact.
Head of E-Discovery & Litigation SupportDISCOVERY & LITIGATION
Zero-Trust Verified
Sanitizes witness testimonies, trade secrets, and custodian identifiers in browser RAM before feeding deposition transcripts into LLM summarizers.
Senior Legal Operations DirectorLEGAL OPERATIONS
Zero-Trust Verified
Audits AI prompt hygiene across associate attorneys, preventing inadvertent disclosure of confidential client matters to public models.
Cross-Border Transactions LeadM&A ADVISORY
Zero-Trust Verified
Masks party names, valuation figures, and unannounced deal terms during due-diligence document parsing in Airplane Mode.
Flat Rate — Unlimited Seats
Your Whole Team on Real Client Data. Safely. $99/mo Flat.
No per-seat pricing. No DPA negotiation. No IT portal. Secure your entire organization with client-side PII masking — $99/month flat, unlimited users. SOC 2 & HIPAA ready. Works in Airplane Mode.
Zero-Trust Data Sanitization (ZTDS) — Verified Architecture
Independently auditable facts for Legal compliance teams
Data transmission
0 bytes sent to any server
Processing location
100% browser RAM (volatile memory)
Session map persistence
Destroyed on tab close — never written to disk
Key derivation
Argon2id (memory-hard, server-independent)
Encryption cipher
XChaCha20-Poly1305 (authenticated encryption)
Offline verification
Airplane Mode Standard — full function without network
BAA / DPA required
No — zero PHI/PII reaches PrivacyScrubber servers
Audit method
Chrome DevTools → Network tab — zero outbound requests
How to audit: Open PrivacyScrubber, enable Airplane Mode, paste any legal text, click Protect PII. Open Chrome DevTools → Network tab. Zero outbound requests will confirm 100% local execution. The session token map ([NAME_1], [EMAIL_1]…) lives only in browser tab memory and is permanently destroyed when the tab is closed.
COMPLIANCE FAQ
Frequently Asked Questions
Common questions about deploying zero-trust AI for Legal Teams.
Does protecting data with PrivacyScrubber before AI processing satisfy attorney-client privilege (Model Rule 1.6)?
Yes. Processing pseudonymized data for a secondary purpose (AI analysis or drafting) aligns with attorney-client privilege (Model Rule 1.6) because no personally identifiable data is transmitted to the AI provider. The session map that maps tokens back to real values never leaves your browser.
What specific PII does PrivacyScrubber detect for legal workflows?
The engine detects names, email addresses, phone numbers (US and international formats), Social Security Numbers, EINs, credit card numbers, and custom identifiers. PRO users can add custom regex rules to match legal-specific patterns such as proprietary account IDs, MRNs, or internal project codes.
Can I reverse the redaction if I use PrivacyScrubber to mask legal data?
Yes. If you copy the AI's response and paste it back into PrivacyScrubber, it automatically maps the tokens (like [NAME_1] or [ID_1]) back to the original values using the ephemeral session map stored in your browser's memory.
Can PrivacyScrubber be used 100% offline without network requests?
Yes. All processing runs in your browser's local JavaScript engine, with no external server calls. Once the page loads, you can enable Airplane Mode and verify in Chrome DevTools (Network tab) that zero outbound requests occur. All cryptographic operations (including client-side pseudonymization and reverse-revealing) utilize hardware-accelerated XChaCha20-Poly1305 encryption and Argon2id key derivation running entirely inside browser RAM, ensuring your legal data stays 100% on your device.
How can I verify that PrivacyScrubber sends zero data to servers?
Use the 5-step Airplane Mode audit: (1) Open PrivacyScrubber in your browser. (2) Disconnect your network connection (enable Airplane Mode). (3) Paste a text sample containing names, emails, and phone numbers. (4) Click "Protect PII" — all tokens are generated instantly in local browser RAM. (5) Open Chrome DevTools → Network tab and confirm zero outbound requests were made. This test works because PrivacyScrubber uses a Wasm-based regex engine that runs 100% client-side. The session token map (e.g. [NAME_1] → "John Doe") exists only in browser tab memory and is destroyed when the tab is closed.
Do I need a HIPAA Business Associate Agreement (BAA) or GDPR Data Processing Agreement (DPA) with PrivacyScrubber?
No. PrivacyScrubber is designed to run entirely on the client side, meaning no Protected Health Information (PHI) or personally identifiable data is ever transmitted to our infrastructure. Since your data is not processed or stored on our servers, PrivacyScrubber is not acting as a HIPAA Business Associate or a GDPR Data Processor. Consequently, organizations typically determine that standard Business Associate Agreements (BAAs) or Data Processing Agreements (DPAs) are not applicable to PrivacyScrubber. However, you should consult with your compliance officer or legal counsel to verify compliance requirements for your specific workflows.
Can I customize detection rules for industry-specific data formats?
Yes. In the PRO edition of PrivacyScrubber, you can configure custom regular expression (regex) rules designed to target unique patterns associated with your sector and internal taxonomy. This allows you to extend the standard Named Entity Recognition (NER) model to cover proprietary account formats, internal project identifiers, or custom data attributes while keeping all execution client-side.
Is it safe for lawyers to use ChatGPT for contract review?
Uploading unredacted contracts can waive attorney-client privilege. Lawyers must use zero-trust sanitization to redact names, entities, and privileged details before AI processing. Protect your firm with TEAMS for $99/mo.
Is pasting sensitive data into ChatGPT safe?
Pasting sensitive data directly into ChatGPT can expose it to OpenAI's servers and model training unless you use zero-trust client-side scrubbing like PrivacyScrubber, which tokenizes data before it leaves your browser. Protect your workflows for $15/mo with PRO.
How does client-side PII redaction work?
Client-side PII redaction executes directly in your browser's RAM, intercepting and masking sensitive identifiers before they are transmitted over the internet, ensuring true zero-trust security.
How does the Secure Workspace differ from the Browser Extension?
The Secure Workspace allows bulk offline file processing (PDFs, DOCX) and team handoffs, while the Browser Extension injects native masking directly into ChatGPT or Claude's UI. Both are included in our zero-trust ecosystem.
What is the PII MCP Server used for?
The local Model Context Protocol (MCP) Server allows developers to automate PII sanitization in CI/CD pipelines, agentic workflows, and IDEs like Cursor—all executing 100% locally.
What Legal Professionals Send to AI — and What They Should Be Sending InsteadWhy Legal Compliance Teams Flag Unmasked AI Prompts
Legal oversight is unrelenting: attorney-client privilege (Model Rule 1.6), court confidentiality rules, and state bar ethics opinions on third-party AI use. Yet, daily paralegal workflows demand high-speed summarization. You must navigate this tension securely, relying on protocols outlined in court document protection for ai analysis. The only legally defensible strategy is achieving true zero-transmission of identifying client data. Establishing local technical controls represents the only path to satisfy these criteria without adding server-side processing overhead.
How to Use AI on Real Legal Data — Without Sending a Single Real Name
PrivacyScrubber utilizes Zero-Trust Data Sanitization (ZTDS) natively within your browser, offering both a standalone copy-paste workspace and the PrivacyScrubber Chrome Extension for automated workflow integration. By isolating sensitive legal and personal entities (like [CLIENT_NAME] or [CASE_ID]) in-browser, we help protect client case files and litigation documents never exit your local machine. This mirrors the defensible posture required for enterprise data governance. The Chrome Extension makes this frictionless for attorneys by placing an active shield button directly within ChatGPT, Claude, and Gemini interfaces to redact prompts in-place and detokenize answers automatically. Processing data through browser-based Named Entity Recognition allows safe integration of ChatGPT, Claude, Copilot, and AI legal research platforms for complex tasks while preserving client privacy.
Is PrivacyScrubber safe for attorney client privilege AI, legal confidentiality, lawyer ChatGPT safety?
Yes, absolutely. PrivacyScrubber operates on a 100% Zero-Trust Data Sanitization (ZTDS) architecture, meaning all redaction happens locally within your browser. When working with attorney client privilege AI, legal confidentiality, lawyer ChatGPT safety, no sensitive data ever leaves your device or touches a cloud server.
How does it handle custom data structures for legal?
Our engine includes 22+ built-in industry profiles optimized for legal data. Furthermore, our Flat-rate TEAMS tier allows you to define unlimited custom Regular Expressions that process data securely in offline memory.
Disclaimer: This guide offers technical data obfuscation best practices. It does not constitute legal advice. Consultation with counsel for GDPR/HIPAA compliance is recommended.
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Keep this master link secure. Anybody with this URL can utilize your corporate TEAMS subscription.
Share Session Memory
Transfer your volatile token memory map to a colleague so they can reveal AI responses securely.
Zero-Trust Encryption
Hardware-accelerated AES-256-GCM. Key derivation via PBKDF2 (600,000 iterations). 100% Client-Side.
PRO / TEAMS
Enterprise Session Handoff
Collaborate without risk. Securely transfer volatile token memory maps directly to colleagues, enabling secure cross-device AI data restoration without saving anything to disk.
Airplane Mode Challenge
Zero-Server · Zero-Trust · 100% Local
Turn off your Wi-Fi right now and try pasting text into the tool below.
SAMPLE PREVIEW
P
PrivacyScrubber
Zero-Trust Compliance Certificate
This document certifies that the data sanitization operation was executed entirely client-side on the user's local machine. Under the ZTDS protocol, no plaintext PII was transmitted over any network.
Timestamp:2026-07-17T12:35Z
Session Hash:a4b9c1d3...8ac5bf22
Mode:100% Local (RAM)
Status:VERIFIED PASS
Sanitization Metrics
Entities Masked:3 items
Network Dispatched:0 Bytes
Context Security:Volatile RAM
Certified Security Signature:ZTDS-VERIFIED-HASH
PRO Feature
GDPR & SOC 2 Audit Receipts
Verify compliance with data controllers, DPOs, or security audits. Download a signed PDF certificate generated locally in your browser to prove that no prompt data left your network.
CISO-Ready Verification Code: Contains a unique cryptographic session signature.
Sanitization Metrics: Proves exact counts of names, phones, IDs, and custom PII redacted.
Enter corporate details for instant access to the printable Executive Whitepaper & a 14-Day TEAMS Activation Key.
Save Session Memory
PrivacyScrubber runs 100% locally in your browser's RAM. Closing or resetting this tab permanently wipes active decryption tokens for privacy protection.
Zero-Trust Session Backup
Download your encrypted session file (.pssession). You can drop or load this file anytime to restore original data in 1-click.
DevSecOps Audit Report
Zero-Trust Directory Scan Complete. 100% Offline.
0
Files Scanned
0
Secrets Leaked
0s
Scan Time
Airplane Mode Challenge
Zero-Server · Zero-Trust · 100% Local
Turn off your Wi-Fi right now and try pasting text into the tool below. It processes 100% in your local RAM without sending any network requests.
