Google is deprecating PKP support from the Chromium open-source browser. Webmasters use this with HTTPS:// sites.
Google saw a problem with this security feature. When it was launched the community welcomed this technology. It was just viewed as an extra security layer to help and deploy HTTPS:// The community said it was hard to deploy, people would get an error in setting up. Users downloaded the wrong keys, sometimes the sites had different certificates resulting from blocking users for long periods of time. This is a huge problem as sites lose traffic. Then most webmasters were turned off by the new technology and avoided this feature.
There is also a possibility were an attacker could use the PKP to hijack a site. There are codes for such hacks published on gitHub. PKP deployment was low regarding all HTTPS:// sites.
As a low adoption of PKP security feature among developers Google has planned to remove this feature. They are planning on removing this in Google Chrome 67. The planned release date is May 29th. Developers still have the opportunity to submit opinions against Googles plans to remove this security feature.
