By · Last updated 2026-04-07

#1 Exfiltration Vector in 2025

AI Data Leak Prevention

32% of all data exfiltration now happens through AI tools. Stop sensitive data from reaching ChatGPT, Claude, Copilot, and other GenAI platforms with real-time anonymization.

77%
employees paste data into AI
32%
of exfiltration via AI
14
pastes per employee/day
3+
sensitive pastes daily

Why AI Data Leak Prevention is Critical

AI tools like ChatGPT, Claude, and Copilot have transformed how we work. But they've also created a massive new attack surface. According to LayerX's 2025 research, AI is now the #1 data exfiltration vector, surpassing traditional channels like email and USB drives.

Real-World AI Data Breaches (2025)

  • Chrome Extension Breach: 900,000 users had their AI conversations stolen via malicious browser extension (Dec 2025)
  • Urban VPN Breach: 8 million users' AI data harvested through VPN service (2025)
  • Average breach cost: $4.88 million (IBM 2024), with AI-related breaches trending higher

Complete AI Data Leak Prevention

Multiple layers of protection for all AI touchpoints

Chrome Extension

Real-time protection for ChatGPT, Claude, Gemini. Auto-detect and anonymize PII before it's sent.

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MCP Server

Integrate with Cursor, Windsurf, and other MCP-compatible AI coding tools. Protect your codebase.

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Desktop App

Process files locally before sharing with AI. Batch anonymization for documents, spreadsheets, and more.

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REST API

Build AI leak prevention into your applications. Protect data pipelines and automated workflows.

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AI Leak Prevention Capabilities

285+ Entity Types

Detect names, SSNs, credit cards, API keys, medical records, and 250+ more PII categories that could leak through AI.

48 Languages

Global coverage for multinational teams. Detect PII in English, German, French, Spanish, Chinese, Japanese, and 42 more.

Reversible Encryption

AES-256-GCM encryption lets you restore original values when needed. Maintain data utility while preventing leaks.

Zero-Knowledge

Encryption keys never leave your control. We can't access your data even if compelled. True zero-knowledge architecture.

EU Data Residency

100% German infrastructure on Hetzner. No AWS, Azure, or GCP. No US Cloud Act exposure. Full GDPR compliance.

Enterprise Ready

Deploy org-wide with managed policies. Team management, usage analytics, and centralized key management.

30-Day Implementation Roadmap

1

Days 1-7: Assessment

Audit current AI tool usage. Identify high-risk teams and data flows. Deploy Chrome Extension to pilot group.

2

Days 8-14: Policy

Draft AI acceptable use policy. Configure detection rules for your sensitive data types. Set up team management.

3

Days 15-21: Rollout

Deploy to all teams. Conduct employee training. Configure MCP Server for development teams.

4

Days 22-30: Optimize

Review detection accuracy. Refine policies based on feedback. Set up ongoing monitoring and reporting.

Stop AI Data Leaks Before They Happen

200 free tokens to get started. No credit card required. Deploy Chrome Extension in minutes.

About this page

We update this page when our platform or the law changes.

Read our founder note for how we work.

Each change shows up in the timestamp at the top.

Related reading

We follow these rules

  • GDPR (EU 2016/679).
  • ISO/IEC 27001:2022.
  • NIS2 (EU 2022/2555).
  • HIPAA safe harbor under 45 CFR § 164.514(b)(2).

Our promise

We do not sell your data.

We do not train models on your text.

We store your files in Germany.

You can delete your account at any time.

You own your work.

Where we run

Our servers live in Falkenstein, Germany.

We use Hetzner. They hold ISO 27001 certification.

All data stays in the EU.

Backups run every day.

Need help?

Email support@anonym.legal.

We reply within one business day.

How we test

We run a full check suite on every release.

Each surface gets its own sweep script and report.

Human reviewers spot-check the output each week.

We track recall and precision on a labelled set.

Bad runs block the deploy.

What we never do

  • We never sell your information to third parties.
  • We never train models on what you upload.
  • We never keep your work after you delete it.
  • We never share keys with any outside firm.
  • We never run ads inside the product.

Plans in plain words

We sell credits, not seats.

One credit covers one short job.

Long jobs use a few credits each.

You can top up at any time.

Unused credits roll over each month.

Read the plans page for current rates.

Who built this

A small team of engineers and lawyers built this.

We ship from Europe and work in the open.

Our founder note spells out why we started.

Where to start

How the parts fit

A browser add-on cleans text inside Chrome.

A Word plug-in handles drafts in Office.

A small desktop tool works on whole folders.

An agent protocol link feeds large models safely.

All four share one core engine and one rule set.

Words from our team

We started this work after a lunch about cookies.

One friend kept getting odd ads on her phone.

We asked why a court file leaked through a draft.

We sketched the first build on a napkin that week.

By month three we had a tiny demo for a friend.

She used it on her first case the next day.

Common questions we hear

Can the tool read scanned PDFs? Yes, with OCR.

Does it work on long files? Yes, in small chunks.

Can I roll my own rule set? Yes, save it as a preset.

Does it run offline? The desktop build runs offline.

Do you keep my files? No, the cloud build wipes after each run.

Will it learn from my work? No, we never train on inputs.

A short tour of the workflow

Upload a file or paste a snippet of prose.

Pick the entities you want gone from the draft.

Choose a method: replace, mask, hash, encrypt, or redact.

Press run and watch the side panel show each hit.

Skim the result and tweak any rule that misfired.

Save the cleaned file or send it to a teammate.