GuardDog - Extension Security Monitor

About

Are your Chrome extensions safe?

In 2025-2026, over 30 malicious Chrome extensions were discovered, leading to $8.5M+ in cryptocurrency theft. GuardDog acts as an antivirus for your extensions — scanning permissions and scoring risks so you can spot threats.

🔍 INSTANT SECURITY SCAN
Click "Scan" and GuardDog analyzes every installed extension's permissions, then calculates a risk score (0-100) with 4 levels: Low, Medium, High, and Critical. Your riskiest extensions are shown first.

💬 PLAIN-LANGUAGE EXPLANATIONS
No more cryptic permission names. GuardDog explains what each permission actually means in plain English:
• tabs → "Can see the URL and title of every open tab"
• cookies → "Can read and modify website cookies, including login sessions"
• <all_urls> → "Can read and modify data on ALL websites you visit"
• 40+ permissions mapped — every single one explained clearly.

📊 RISK DASHBOARD
Your popup shows a summary of all extensions at a glance:
• Total extension count with breakdown by risk level
• Top risky extensions with their biggest threat explained
• Color-coded badges: 🟢 Low, 🟡 Medium, 🟠 High, 🔴 Critical
• High-risk badge indicator on the extension icon

🔒 PRIVACY FIRST
GuardDog works entirely on your device — no servers, no data collection, no tracking.
✅ No network requests — works 100% offline
✅ No data collection — everything stays on your device
✅ No content scripts — never touches your web pages
✅ No host permissions — cannot access your browsing data
✅ Only 4 permissions: management, notifications, storage, alarms

🌍 PERFECT FOR
• Anyone worried about extension security after recent crypto theft incidents
• Developers who install many extensions and want a quick risk check
• Security-conscious users who want to understand what their extensions can access
• IT teams evaluating browser extension safety

Built to protect the millions of Chrome users who don't know what their extensions can really do.