Public Wi-Fi Phishing Alert

Alerts you when connected to public Wi-Fi captive portals to help prevent evil twin and phishing attacks.

Public Wi-Fi networks at coffee shops, airports, hotels, and venues often force you to sign in through a webpage called a captive portal. While many are legitimate, malicious actors can easily create rogue access points ("evil twin" attacks) with fake login pages designed to capture your credentials or intercept your traffic. Public Wi-Fi Phishing Alert automatically detects when your browser is redirected to a captive portal, giving you an immediate warning before you log in or share sensitive information. KEY FEATURES • Instant Captive Portal Detection: Uses smart algorithms to detect captive portals seemlessly. • Evil Twin Defense: Helps you spot suspicious login portals before entering personal information or social sign-ins. • Privacy-First Design: Operates locally on your device without sending your browsing data or network traffic to external servers. • Lightweight & Efficient: Runs seamlessly in the background using minimal browser resources. Uses event-driven Manifest V3 background listeners instead of continuous background polling. HOW IT WORKS 1. Connect to any public Wi-Fi access point. 2. If the network redirects you to a captive portal page, Public Wi-Fi Phishing Alert triggers a clear visual warning overlay. 3. Do NOT enter private and sensitive passwords, emails, or credentials when the alert overlay is seen. WHO IS THIS FOR? • Frequent travelers using airport, train, or hotel Wi-Fi. • Remote workers and students connecting in cafes or co-working spaces. • Security-conscious users who want an added layer of network awareness. PRIVACY & TRANSPARENCY Your privacy matters. Public Wi-Fi Phishing Alert: • Does NOT track, log, or sell your browsing history. • Requires broad host permissions solely to inject warning overlays on intercepted portal domains across the web. • Performs all detection routines locally inside your browser.