Don’t Pin To A Single CA

If you do certificate pinning, either via HPKP, or in your mobile app, or your IoT device, or your desktop software, or anywhere… do not pin solely to a single certificate, whether it’s a leaf certificate, intermediate or root certificate, and do not pin solely to certificates from a single CA. This is the height of self-imposed Single Point of Failure foolishness, and has the potential to bite you in the ass. If your CA goes away or becomes untrusted and it causes you problems, no-one will be sympathetic.

This Has Been A Public Service Announcement.

Buzzword Bingo

This is a genuine question from a European Union public consultation:

Do you see the need for the definition of a reference architecture recommending a standardised high-level framework identifying interoperability interfaces and specific technical standards for facilitating seamless exchanges across data platforms?

Words fail me.