Sentinel MK2: AI-Powered Web Security Extension
Amaan Syed
🛡️ Sentinel MK2
Sentinel MK2 is a next-gen browser extension for real-time web security, built with AI-powered analysis and visual indicators to enhance your online safety—developed during HackHazards 25, where it ranked in the Top 100 projects out of 8000+ submissions from 17500+ participants, representing 25+ countries and 30+ universities.
🌐 Live Project
🔗 Website: sentinel-cyber.vercel.app
🎥 Demo Video: Watch on YouTube
📄 Privacy Policy: View Here
🌟 Key Features
🔒 Real-Time Security Scoring: Instantly assess the security of any website you visit
🔐 SSL/TLS Certificate Insights: View detailed certificate verification for HTTPS connections
🤖 AI Security Chat: Ask AI-powered questions about the current site’s safety using the Groq API
🧭 Link Security Markers: Get visual cues on link safety before clicking
🖥️ Screen Content Analysis (via Screenpipe): Detect potential phishing or risky content on-screen
🧰 Tech Stack
Chrome Extension APIs — For deep browser integration
Groq API (LLaMA 3 70B) — Powers the AI assistant
Screenpipe — Enables real-time screen analysis
JavaScript + Webpack — Core logic and bundling
⚙️ Installation Guide
🔗 Browser Extension Setup
Download:
Grab the unpacked extension from Download Page or use the
dist folder.Load in Chrome:
Visit
chrome://extensions/Enable Developer Mode
Click Load unpacked and select the extension folder
API Key Setup:
Get your free Groq API key from Groq Console
Open the extension → Settings → Paste your API key
✅ You’re all set! The extension is now active.
🖥️ Screenpipe Setup (Optional)
Open PowerShell or CMD
Run:
Keep this running in the background when using screen analysis features
🎯 Hackathon Purpose
Sentinel MK2 was built for HackHazards 25, a cybersecurity-focused hackathon. The goal:
Empower users to proactively identify and understand security threats through a browser-native, AI-integrated tool.
Project Highlights:
Contextual AI explanations for non-technical users
Proactive phishing and fake-site detection
Real-time, privacy-first assessments
🤝 Contributing
Want to help improve Sentinel MK2? Follow these steps:
📄 License
MIT License – see LICENSE
Created for HackHazards 25 – A project by Amaan Syed
🏅 Top 100 Project | Among 8000+ projects | 17500+ participants
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Posted Jul 9, 2025
Developed Sentinel MK2, a browser extension for real-time web security, ranked Top 100 at HackHazards 25.
