Should I enable HSTS preload for my entire domain?
Asked on Sep 28, 2025
Answer
Yes, enabling HSTS preload for your entire domain is a strong security measure that helps protect users from man-in-the-middle attacks by ensuring browsers always connect to your site using HTTPS.
Example Concept: HSTS (HTTP Strict Transport Security) preload is a mechanism where a website can be included in a browser's hardcoded list to enforce HTTPS connections. This is achieved by adding the "preload" directive to the HSTS header and submitting the domain to the HSTS preload list. The header should look like Strict-Transport-Security: max-age=63072000; includeSubDomains; preload.
Additional Comment:
- Ensure your site and all subdomains are fully HTTPS before enabling HSTS preload.
- Once preloaded, removal from the list can take time, so be certain of your HTTPS readiness.
- Regularly test your site with tools like SSL Labs to ensure ongoing compliance and security.
✅ Answered with Security best practices.
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