HPKP Reports, the ultimate protection


With HPKP you can protect yourself from threats in the PKI ecosystem

Our Platform

HTTP Public Key Pinning is a controversial mechanism that provides site operators an incredibly powerful defense mechanism. With the ability to 'pin' public keys you can protect yourself from rogue certificates issued by a hostile CA.

The mechanism is controversial though. With such a huge amount of power, and an equal amount of complexity in deploying it right, many sites have struggled to do it right and talk of deprecation is circulating.



HPKP Graphs view

Key Features

HPKP serves a very specific purpose, to protect the host against mis-issued or 'rogue' certificates. Even with a CA acting in concert with an attacker can't issue a certificate that will be trusted by the browser when presented with a valid HPKP policy.

  • Easy to enable

  • Difficult to configure and maintain

  • Discover rogue certificates for your site

  • Prevent abuse of rogue certificates



HPKP Reports view

Enabling HPKP Reports

Whilst enabling HPKP is easy, you simply return a the HTTP response header 'public-key-pins', knowing which values to pin and why can be extremely difficult.

Pinning at the leaf, intermediate or root levels offer varying degrees of protection and difficulty in maintaining the policy. Understanding which you should pin at and why, if you should pin, is a task for those with extensive experience in the Web PKI.



HPKP error message in Chrome

Some facts about us

21k+ Sites Monitored
170b+ Reports Processed
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  • 10 000 reports per month
  • 3 sites monitored
  • 90 day retention
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