---
title: HPKP
slug: Glossary/HPKP
tags:
  - Glossary
  - Security
---
**HTTP Public Key Pinning** (**HPKP**) is a security feature that tells a web client to associate a specific cryptographic public key with a certain web server to decrease the risk of {{Glossary("MITM")}} attacks with forged certificates.

## See also

- {{HTTPHeader("Public-Key-Pins")}}
- {{HTTPHeader("Public-Key-Pins-Report-Only")}}
- [RFC 7469](https://datatracker.ietf.org/doc/html/rfc7469)
- Wikipedia: [HTTP Public Key Pinning](https://en.wikipedia.org/wiki/HTTP_Public_Key_Pinning)
