In 2026, website security is no longer only about having an HTTPS certificate. Modern browsers also expect properly configured HTTP security headers. These headers tell the browser how to protect users, restrict risky behavior and reduce common attack scenarios.
What is an HTTP security header?
An HTTP header is an instruction sent by the web server to the browser. Some headers directly improve security by enforcing HTTPS, restricting external scripts or preventing malicious iframe embedding.
Key headers to check
- Strict-Transport-Security: enforces HTTPS.
- Content-Security-Policy: reduces script injection risks.
- X-Frame-Options: limits clickjacking exposure.
- X-Content-Type-Options: prevents unsafe content interpretation.
- Referrer-Policy: controls information shared during navigation.
Why it matters for SMEs
Automated attacks do not only target large enterprises. Corporate websites, WordPress installations, extranets and customer portals are constantly scanned. Weak HTTP configuration can unnecessarily expose users and brand reputation.
How to check your website
Selection ICT provides a simple online tool to analyze key HTTP security headers and get an initial view of your public web security posture.
Use Selection ICT diagnostic tools to get an initial view of your exposure.
Run an HTTP security check