What is Fastly's security headers grade?

We scan fastly.com live for HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy, then assign an A+ to F grade with fix recommendations.

How can I check my own site's security headers?

Use the free Webalert Security Headers Checker to scan any URL and get the same A+ to F grade with per-header recommendations.

Fastly Security Headers Report

Live security headers grade for Fastly (fastly.com). We check HSTS, CSP, X-Frame-Options, and more.

Scanning Fastly...

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Why Fastly security headers matter

Security headers tell browsers how to protect visitors on fastly.com against clickjacking, MIME sniffing, XSS, and protocol downgrade. A strong grade (A/A+) means the service ships a modern security posture; a weak grade means important protections are missing.

Want the same scan for your own site? Use our free security headers checker, or check whether Fastly is currently up on the outage tracker.

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Frequently asked questions

What is Fastly's security headers grade?: We scan fastly.com live for HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy, then assign an A+ to F grade with fix recommendations.
How can I check my own site's security headers?: Use the free Webalert Security Headers Checker to scan any URL and get the same A+ to F grade with per-header recommendations.