Instant security posture scores for any domain. Checks TLS, DMARC, security headers, breaches, and CVEs in seconds.
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Know the security posture of any website in seconds—without leaving your browser.
LynxRadar is a free security intelligence extension that automatically scans every website you visit and gives it a letter grade (A+ through F) based on its real-world security posture. The moment you land on a site, LynxRadar quietly runs a passive assessment in the background. Click the extension icon to see a full breakdown: what's configured correctly, what's weak, and what's dangerously missing.
No login required. No account needed. No data collection from your browsing. Just instant, actionable security intelligence on every domain you visit.
WHY THIS EXISTS
Every day, you share data with websites—logging in, submitting forms, entering payment details, signing up for services. But most people have no way to know whether the website on the other end actually takes security seriously.
Does it use modern TLS? Is email spoofing blocked so attackers can't impersonate it? Are security headers in place to protect your browser? Has it appeared in a data breach? Is it running software with known CVE vulnerabilities?
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