By George Curta · Last updated 2026-04-07
ChatGPT Data Protection
Stop sensitive data from reaching ChatGPT. Our Chrome Extension auto-detects PII, anonymizes before sending, and de-anonymizes responses. Works with Claude, Gemini, and Copilot too.
Why ChatGPT Data Protection Matters
ChatGPT and other AI tools have revolutionized productivity, but they've also become the #1 data exfiltration vector. Employees routinely paste customer data, source code, financial information, and confidential documents into AI chat interfaces.
What employees paste:
- Customer emails and conversations
- Source code with API keys
- Financial reports and data
- Legal documents and contracts
- Medical records and patient data
The risks:
- Data stored in AI training sets
- GDPR/HIPAA compliance violations
- Competitive intelligence leakage
- Client trust breaches
- Regulatory fines up to €20M
How ChatGPT Protection Works
Seamless protection that doesn't interrupt your workflow
Detect
Our extension monitors text as you type or paste into ChatGPT. 285+ entity types detected across 48 languages.
Anonymize
PII is automatically replaced with placeholders before sending. "John Smith" becomes "[PERSON_1]". ChatGPT never sees the real data.
De-anonymize
When ChatGPT responds, placeholders are restored to original values. You see the full context, ChatGPT only saw anonymized data.
Works With All Major AI Tools
ChatGPT Protection Features
Real-Time Detection
PII detected instantly as you type. No manual highlighting or selection required.
Local Processing
Detection happens in your browser. Data never leaves your device until anonymized.
Auto De-anonymize
Responses automatically restored to original values. Seamless user experience.
Chrome Extension
One-click install. Works on any ChatGPT interface including mobile web.
MCP Server
Integrate with Cursor, Windsurf, and other MCP-compatible AI tools.
Enterprise Ready
Deploy org-wide with managed policies. GDPR compliant. SOC 2 controls.
Related Resources
AI is Now the #1 Data Exfiltration Vector
77% of employees paste data into AI. Here's what you can do about it.
900,000 Users Had Their AI Chats Stolen
The December 2025 Chrome extension breach exposed millions of AI conversations.
AI Data Protection for Teams
How organizations protect sensitive data when using AI tools.
Protect Your ChatGPT Conversations Today
Free Chrome Extension. No signup required for basic protection. Stop data leaks before they happen.
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
- Common questions
- Glossary
- How tokens work
- Security posture
- Where we comply
- What we detect
- Case studies
- Release notes
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
- Open the web app and try a sample file.
- Learn how credits get counted.
- See current plans and limits.
- Meet the team behind the product.
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.