Public Key Pinning

Public Key Pinning Extension for HTTP
http://www.entrust.com/public-key-pinning-extension-for-http/

Certificate and Public Key Pinning
https://www.owasp.org/index.php/Certificate_and_Public_Key_Pinning

Certificate and Public Key Pinning
https://jp.globalsign.com/blog/2013/certificate_public_key_pinning.html

解読不可能のはずの「iMessage」が実は解読可能でIDやパスワードも読めることが判明
http://gigazine.net/news/20131018-apple-can-read-imessage/