
Mozilla Observatory Alternative: 7 Scanners Tested (2026)
Looking for a Mozilla Observatory alternative? We tested 7 free website security scanners — SecScanner, SSL Labs, ImmuniWeb, Sucuri — to find what matters.
Stay up to date with the latest security best practices, tips, and insights to keep your website protected.

Looking for a Mozilla Observatory alternative? We tested 7 free website security scanners — SecScanner, SSL Labs, ImmuniWeb, Sucuri — to find what matters.

A step-by-step security audit checklist covering TLS, headers, DNS, content, and more. Copy this list, work through it, and harden your site in an afternoon.

Before entering personal data on any website, run these 10 quick checks. Learn how to spot unsafe sites, verify SSL certificates, and protect yourself online.

The website security landscape has shifted. New browser defaults, deprecated headers, and evolving threats mean your 2024 security setup may have gaps. Here's what matters now.

Learn how to configure all essential security headers in Next.js using next.config.ts. Copy-paste examples for HSTS, CSP, X-Frame-Options, Permissions-Policy, and cross-origin headers — with real-world edge cases like OAuth and OG images.

Learn what clickjacking is, how attackers use invisible iframes to trick users, and how to prevent it with X-Frame-Options and frame-ancestors CSP.