Security headers for gov.br

Security headers summary for gov.br

This page validates the HTTP security headers returned by gov.br, scoring its protection against common web attacks.

Below you can review which headers gov.br sends, which are missing, and recommendations to harden the configuration.

What are HTTP security headers?

HTTP security headers are response headers that instruct the browser to apply protective policies, mitigating attacks such as XSS, clickjacking and content sniffing.

Key headers include Content-Security-Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options and Referrer-Policy.

How to interpret the headers of gov.br

A higher score means gov.br sends more of the recommended security headers with secure values. Missing headers are highlighted so you know what to add.

Focus first on CSP and HSTS for gov.br, as they provide the strongest protection against scripting and downgrade attacks.

Use cases

  • Audit the security headers of gov.br before or after a deploy.
  • Identify missing headers that increase attack risk on gov.br.
  • Verify that gov.br enforces HTTPS with HSTS.
  • Support hardening reports and security reviews for gov.br.

Frequently asked questions

Which security headers does gov.br use?

This page lists the HTTP security headers present on gov.br, such as CSP, HSTS, X-Frame-Options and X-Content-Type-Options, along with their values.

Does gov.br have a Content-Security-Policy?

The results show whether gov.br sends a Content-Security-Policy header and whether its value is considered secure.

Does gov.br enforce HTTPS with HSTS?

The Strict-Transport-Security section indicates whether gov.br forces HTTPS and for how long, including includeSubDomains and preload flags.

Why does gov.br have a low security score?

A low score means gov.br is missing important headers or sends insecure values. The missing-headers and recommendations sections explain how to improve it.

Is the security headers check for gov.br free?

Yes. The XploreNetHub Security Headers Validator is completely free, requires no sign-up and runs directly in your browser.

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