Real-time PII firewall for ChatGPT, Claude, and Gemini. Blocks sensitive data before it reaches any AI model.
Users
3
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#337K
#263K among extensions
Version
1.2.0
updated 16 Jun 2026
Users
monthly, 4 months
Latest, 17 Oct 2026:3 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 17 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About MaskedPII – AI Data Leak Prevention
MaskedPII is the AI data leak prevention tool your compliance team has been waiting for.
As employees use ChatGPT, Claude, and Gemini for daily work, sensitive data — Social Security numbers, credit cards, dates of birth, API keys, internal project names — is leaking to public AI models every day. Most companies have zero visibility into it.
MaskedPII fixes that. It runs silently in your browser and intercepts sensitive data before you hit Send.
What it detects: ✓ Social Security Numbers ✓ Dates of Birth ✓ Credit Card Numbers ✓ Phone Numbers & Email Addresses ✓ API Keys & Secret Tokens ✓ IP Addresses ✓ Custom keywords & internal codenames you define
Key features: ✓ Real-time block modal — stops the message before it sends ✓ Custom secrets — add any word or phrase to block ✓ Full audit log — every blocked attempt timestamped and stored locally ✓ CSV export for compliance reporting ✓ On/Off toggle — disable instantly when needed ✓ Works on ChatGPT, Claude.ai, and Google Gemini ✓ 100% local processing — no data ever leaves your device
Built for teams operating under GDPR, HIPAA, SOC 2, and the EU AI Act.
Free to install. No account required.