Test Your Website for HTTP Public Key Pinning Header

Check if your site is using HPKP to defend fraudulent certificate attack

What is HPKP Header?

HPKP (HTTP Public Key Pinning) is a security header which aims to reduce the MITM (man-in-the-middle) attack by pinning the certificates.

You may refer this Mozilla guide to know about the implementation procedure. Once you are done with the configuration, use HPKP header tool to verify.