Young Domain Guard (2026)

Browser extension that detects phishing websites by checking domain age via the RDAP protocol (modern WHOIS replacement). Legitimate sites have old domains; phishing domains are almost always brand new. Alerts users when a domain was registered less than 30 days ago. No server, no tracking — everything runs locally. Free, open-source, available on Chrome, Brave, and Firefox.

Born from a real near-miss phishing incident. Built in TypeScript using the WebExtensions API. Queries RDAP servers directly from the browser to check domain registration date — a simpler and more proactive approach than traditional blacklist-based solutions, which are always playing catch-up.

Authors: Ilian A2Z