AI-powered detection and blocking of hidden web trackers

CyberShield is a privacy-first Chrome extension that detects hidden trackers and surveillance cookies, explains who is tracking you and why, and lets users block or allow trackers in real time.

Unlike traditional blockers, CyberShield focuses on clarity and control — not just blocking, but explaining.

Modern websites silently track users using:

• Third-party scripts
• Tracking pixels
• Persistent surveillance cookies

Most users:

• Don’t know who is tracking them
• Don’t know why they are being tracked
• Have no clear way to control it

Existing tools block trackers blindly, often breaking websites and confusing users.

CyberShield makes invisible tracking visible and understandable.

It:

• Detects hidden third-party trackers on websites
• Analyzes tracker behavior using clear signals
• Uses AI to explain tracker intent in simple language
• Allows users to Block, Allow once, or Always allow
• Provides a dashboard to manage blocked trackers and view analytics

Not just blocking. Explaining and empowering.

Tracker Explainability

“Detects hidden trackers and explains how they silently monitor user behavior.”

This builds trust and helps users make informed decisions.

1. User opens a website
2. Browser extension scans scripts, images, and cookies
3. Tracking behavior is converted into signals
4. Signals are sent to the backend API
5. Backend classifies the tracker (rule-based)
6. AI generates a human-readable explanation
7. User chooses to block or allow the tracker
8. Browser enforces blocking at the network level

• Content Script
  • Detects external scripts and tracking pixels
• Background Script
  • Observes cookies and network behavior
  • Communicates with backend
  • Applies blocking rules
• Popup UI
  • Displays tracker details and actions
• Dashboard Page
  • Manage blocked trackers
  • View basic analytics

Signals are privacy-safe indicators generated by the extension:

• third-party
• persistent-cookie
• cross-site
• pixel
• analytics
• unknown-domain

They describe what a tracker does, not who the user is.

• Chrome Extension (Manifest V3)
• JavaScript
• Declarative Net Request API

• Node.js
• Express.js

• Google Gemini API

• chrome.storage.local
• Static tracker lists (JSON)

• No personal data collected
• No browsing history stored
• No request payload inspection
• Privacy-by-design architecture

Endpoint /api/v1/analyze/analyze-tracker

Website ↓ Browser Extension ↓ Backend API ↓ AI Explanation Engine ↓ User Warning & Control

• No passwords collected
• No personal identifiers stored
• No browsing history saved
• Only tracker metadata is analyzed
• User stays in full control

CyberShield is built with privacy by design.

• Makes invisible tracking visible
• Educates users instead of confusing them
• Reduces silent data surveillance
• Builds trust and transparency online

Team Name: Coders’ Heaven

• Anushka Sinha
• Neelabhra De
• Saheb Sen
• Vishal Jati

MIT License