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Security headers checker

Enter a domain to get its HTTP security grade.

Headers such as Content-Security-Policy and Strict-Transport-Security tell browsers how to protect visitors from common attacks.

An outside testing service runs this check, and this grade does not change your SagBot scores.

Questions

Who runs this test?

An outside testing service, which fetches the site from its own servers.

Does the grade affect AI answers?

Not directly. It measures browser protections, not whether AI can read or quote your site.