Document Anonymization for Law Firms
Protect attorney-client privilege with zero-knowledge authentication and end-to-end encryption. Deterministic, regex-based detection produces 100% reproducible results that are fully auditable for court submissions.
Why Legal Needs Specialized Anonymization
Attorney-Client Privilege
Confidential communications between lawyers and clients must remain protected at all times. Standard anonymization tools that process data on third-party servers risk exposing privileged information.
Cross-Border Legal Work
International law firms handle documents containing PII from multiple jurisdictions, each with distinct identifier formats for names, government IDs, tax numbers, and court references across different languages and scripts.
Auditability for Court Submissions
Anonymized documents submitted to courts or regulators must have a verifiable, reproducible anonymization process. Non-deterministic AI-based tools produce inconsistent results across runs, undermining evidentiary reliability.
Legal Document Structure
Legal documents contain defined terms, cross-references between clauses, and specific formatting conventions. Anonymization must preserve document structure including bold text, paragraph numbering, and clause hierarchy.
Firm Hierarchy and Access Control
Law firms operate with distinct roles and responsibilities. Partners, associates, and support staff require differentiated access levels to anonymization tools and audit trails.
Data Sovereignty and Compliance
GDPR and other data protection regulations require that personal data processing remains within specific jurisdictions. Law firms need assurance that client data is never transferred outside the EU or processed by third-party APIs.
How anonymize.solutions Addresses Legal Requirements
Zero-Knowledge Authentication
Your password never leaves your device. Client-side key derivation using Argon2id with XChaCha20-Poly1305 encryption ensures that even if servers are compromised, attorney-client communications remain protected. The same encryption standard used by Signal and WireGuard.
End-to-End Encryption
In E2E mode, the server detects entity positions only. Original values are extracted and encrypted client-side. The server never sees original-to-token mappings, ensuring complete confidentiality of document content throughout the anonymization process.
48 Detection Languages
The broadest language coverage in the product family. 25 languages via spaCy, 7 via Stanza, and 16 via XLM-RoBERTa, including 4 RTL languages (Arabic, Hebrew, Persian, Urdu). Designed for international law firms handling cross-border matters.
Legal Document Handling
Defined terms recognized via contextual keywords and capitalization logic. Cross-references handled through pattern-based clause recognition. Format preservation for Word documents retains bold text, colors, and formatting throughout the anonymization process.
Role-Based Access Control
RBAC with Admin, Editor, and User roles maps to law firm hierarchy. Audit logging retains authentication events for 90 days and admin/security events for 1 year, providing the compliance trail firms require.
Deterministic, Auditable Results
100% reproducible detection using deterministic regex patterns via Microsoft Presidio. No machine learning guessing. The same input always produces the same output, making anonymization fully verifiable for court submissions and regulatory reporting.
MCP Server for AI-Assisted Legal Workflows
MCP Server v2.2.0 with 7 tools integrates directly with Claude Desktop, Cursor IDE, and other MCP-compatible AI assistants. AI processes anonymized data only, ensuring original PII never leaves the firm's control during AI-assisted legal research and drafting.
FileDrop with Metadata Export
Process multiple legal documents simultaneously with CSV summary reports showing what was found in each file, ZIP export bundling all processed files, and JSON metadata providing detailed change documentation for audit purposes.
Entity Types Relevant to Legal Work
50+ entity types across universal, financial, regional, and specialized categories. Detection covers PII commonly found in legal documents across multiple jurisdictions.
Additional country-specific entities available across 48 languages. Custom entities can be created via regex patterns or the AI entity creation wizard for firm-specific identifiers such as internal matter codes or client references.
Built for Regulated Environments
Enterprise Tier for Law Firms
Why Enterprise Is Recommended for Legal
The Enterprise tier is built on the anonym.legal engine, the most advanced product in the anonymize.solutions family. It provides zero-knowledge authentication where your password never leaves the device, end-to-end encryption where the server never sees original document content, and 48 detection languages for international legal work.
Additional Enterprise features critical for law firms include the MCP Server for AI-assisted legal workflows, RBAC with Admin, Editor, and User roles mapping to firm hierarchy, and audit logging with 1-year retention for admin and security events.
Deployment options include managed hosting by anonymize.solutions on ISO 27001-certified infrastructure in Germany, or on-premise deployment on the firm's own servers for maximum data control.
Explore Enterprise Tier Request a QuoteProtect Attorney-Client Privilege
Zero-knowledge authentication, end-to-end encryption, and deterministic results. Discuss how anonymize.solutions can meet your firm's anonymization requirements.