LinkGuard - Malicious URL Protector

About

🛡️ LinkGuard - Safe Browsing, Anti-Phishing & Malware Protection
LinkGuard is your comprehensive browser security assistant, protecting you from phishing websites, malware, and malicious links in real-time. By utilizing multi-layered analysis technology combined with global threat intelligence, LinkGuard serves as the ultimate shield for your daily browsing experience.

✨ KEY FEATURES
🖱️ 1. Click Protection
Accidentally clicked a suspicious link? Don't worry! LinkGuard instantly "freezes" your click to analyze the destination.

If safe: The browser seamlessly redirects you as if nothing happened.

If suspicious/dangerous: A Warning Modal immediately appears, explaining the specific risks and preventing you from accessing the malicious site.

🔎 2. Text Selection Tooltip (Quick Scan)
Spotted a suspicious link in an email or chat but afraid to click it?
Just highlight the text containing the link, and a smart Tooltip will appear right at your cursor, providing a Risk Score and safety label (Safe/Suspicious/Dangerous) without requiring you to visit the URL.

📊 3. Visual Analytics Dashboard
Open the extension's Popup to get a clear overview of your security status:

Detailed Statistics: Total scanned links, blocked threats, and safe links.

Recent Activity: Track the links you've recently interacted with and their threat levels.

⚙️ 4. Smart Whitelist Management
Smart exceptions that don't interrupt your workflow. LinkGuard automatically recognizes and allows safe login flows (SSO/OAuth) from Google, Microsoft, Apple, GitHub, etc. You can also manually add familiar websites to your Whitelist to bypass future warnings.

🧠 MULTI-LAYERED SECURITY ENGINE UNDER THE HOOD
LinkGuard doesn't rely on a single verification method. We utilize a powerful Multi-layered Analysis mechanism:

Global Threat Intelligence: Direct integration with cybersecurity giants like Google Safe Browsing and VirusTotal. Any URL on their global blacklists is instantly blocked (Veto mechanism).

Local Heuristics & Syntax Analysis: For brand new (Zero-day) phishing links not yet on global databases, LinkGuard automatically scores them through 4 active strategies:

Phishing Detection: Detects intentional domain typos (Typosquatting - e.g., faceb00k.com), phishing keywords, and URL obfuscation techniques.

Domain Reputation: Evaluates domain credibility based on length, subdomain abuse, and the use of spam-heavy TLDs.

SSL Validation: Checks the validity and security of HTTPS certificates.

Redirect Detection: Traces cross-domain redirect chains to uncover the true destination hidden by hackers.

⚡ PERFORMANCE OPTIMIZED & PRIVACY-FIRST
Ultra-Lightweight & Fast: Using a smart Caching system, recently scanned links are resolved instantly without slowing down your browsing speed.

UI Isolation (Shadow DOM): LinkGuard's warning dialogs and tooltips are completely isolated, ensuring they never break or alter the layout (CSS) of the websites you're currently viewing.

Privacy Respected: LinkGuard ONLY analyzes links when you actively interact with them (click or highlight). We DO NOT collect your general browsing history, DO NOT read your website content, and DO NOT sell your data.

💡 Install LinkGuard today to confidently open every email, click every link, and browse the web safer than ever before!