FirstGuard - AI Prompt Security & Privacy icon

FirstGuard - AI Prompt Security & Privacy

by FirstGuard · Privacy & Security
Manifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Detect and highlight sensitive data in your ChatGPT prompts before sending

Users
5
−1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#242K
#202K among extensions
Version
1.2.2
updated 23 May 2026

Users

monthly, 7 months
047Mar 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 5 usersMove the mouse over the chart for any month

Ratings count

monthly, 7 months
012Mar 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 2 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 FirstGuard - AI Prompt Security & Privacy

FIRSTGUARD: AI PRIVACY & SECURITY FOR EVERYONE Stop letting your personal data, API keys, or trade secrets feed AI models without oversight. From families protecting their children to professionals securing company secrets, FirstGuard is the essential shield for safe AI usage. 🛡️ EARLY ACCESS & EVOLUTION FirstGuard is currently in Early Access (Beta). By joining us now, you become part of our founding community. We are committed to evolving this tool to meet the highest security standards, with new exclusive features and enhanced capabilities coming soon. 🔒 ABSOLUTE PRIVACY (ZERO SERVER) Unlike other tools, FirstGuard analyzes your data 100% locally in your browser. • Zero Data Transmission: Nothing ever reaches our servers. • 100% Local Processing: No text is stored outside of your machine. • Total Ownership: Your privacy remains your exclusive property. 🚀 KEY FEATURES: Real-Time Scanning: Instant detection of emails, credit card numbers, and API keys in your prompts. • Secure Document Analysis: Drag-and-drop PDF/Text files for a private security check. • Risk Scoring: Immediate visual feedback on your prompt's safety level. • Customizable Themes: Switch between Light and Dark modes to suit your Workspace. • Smart Side Panel: Monitor your security continuously without interruption. • Fully Customizable: Toggle detection rules based on your specific needs. • Privacy Logs: Local history of your alerts, stored only on your device. Why FirstGuard? Because AI security should be simple and accessible to all. Install FirstGuard today and use ChatGPT with total peace of mind.

Growth

WindowUsersChangeRatingsRating
7 days−1−16.7%00.00
30 days−1−16.7%00.00
6 months+2+66.7%00.00

Version history

4 versions recorded
1.2.223 May 2026
1.2.018 May 2026
1.1.21 Apr 2026
1.0.017 Mar 2026

Details

Category
Privacy & Security
First seen
17 Mar 2026
Size
30.0 MB
Languages
en, fr
Pricing
Free
Privacy policy
hill-aphid-4ba.notion.site
Support
hill-aphid-4ba.notion.site
Extension ID
iffghhkgpdiekcpbemgnpjllmljdmdem

Permissions and risk

Elevated riskimpact 4, likelihood 2
Permissions
storagetabsactiveTabsidePaneloffscreenalarms
Site access
https://chat.openai.com/*https://chatgpt.com/*https://claude.ai/*https://gemini.google.com/*https://copilot.microsoft.com/*https://chat.mistral.ai/*https://www.perplexity.ai/*https://perplexity.ai/*https://chat.deepseek.com/*https://www.phind.com/*and 7 more

Alternatives to FirstGuard - AI Prompt Security & Privacy

Extensions that rank for the same store searches or share the Privacy & Security category, ordered by users