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Security headers check

Security headers check: HSTS, CSP and more, monitored

One deploy, proxy change or CDN setting is enough to drop a security header without anybody noticing. Full Stack Audit checks your HTTP security headers on a schedule and emails you the day one disappears or gets weaker.

Or run a free quick check first, no account needed

What a result looks like

Strict-Transport-SecurityPassed

max-age=63072000; includeSubDomains; preload

Content-Security-PolicyWarning

Header missing — consider adding a strict CSP

X-Frame-OptionsFailed

Header missing and no frame-ancestors directive

Run these checks on your site

Free during early access. Each audit also runs the other 119 checks across security, SEO, performance and email.