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Security headers, CSP and HSTS, explained.

What Is HSTS? Strict Transport Security Explained

By Selim Aydin · September 17, 2026

You're probably here because a header checker flagged something called HSTS on your site, or you spotted the term while reading about HTTPS and it wasn't clear whether the two were the same thing....

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Security Headers: What Each One Does and the Value to Send

By Anders Vik · September 15, 2026

Each header with the value to send, the trade-off it carries, and the order to roll them out without breaking the site.

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