Sentinel MK2: AI-Powered Web Security Extension

Amaan Syed

Completed work

AI Agent Orchestrator

Chrome Extension Developer

Web Developer

JavaScript

Webpack

Cybersecurity

🛡️ 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:

iwr get.screenpi.pe/cli.ps1 | iex
screenpipe.exe

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:

# Fork & clone the repo
git checkout -b feature-name
# Make your changes
git commit -m "Describe your changes"
git push origin feature-name
# Open a pull request!

📄 License

MIT License – see LICENSE

Created for HackHazards 25 – A project by Amaan Syed 🏅 Top 100 Project | Among 8000+ projects | 17500+ participants

Like this project

Completed work

Posted Jul 9, 2025

Developed Sentinel MK2, a browser extension for real-time web security, ranked Top 100 at HackHazards 25.

Likes

Views