HTTP response headers, security header configuration, and server hardening.
HTTP headers are invisible to your visitors but critical for security. Headers like HSTS, Content-Security-Policy, and X-Frame-Options tell browsers how to handle your content. Missing or misconfigured headers leave gaps that attackers can exploit.
Our articles explain what each security header does, how to configure them properly, and how to test your setup. We also built a free HTTP Header Inspector tool if you want to check your own site right now.
Your WordPress site is being probed by bots right now. Our free scanner checks eight things attackers look for, grades your site A+ to F, and tells you how to fix every issue. No plugin, no signup, 30 seconds.
One HTTP image on an HTTPS page is all it takes to kill your padlock icon and trigger browser warnings. Our free mixed content scanner checks your pages in seconds, grades your SSL setup A to F, and shows you exactly which resources need fixing.
Your SSL padlock doesn't protect against clickjacking, XSS, or downgrade attacks. Security headers do. Our free HTTP Header Inspector grades your headers A to F, traces redirect chains, and flags server version leaks. Here's what to check and how to fix it.
