Firefox defaults to the same implementation[1].<p>I&#x27;m personally fine with this. MITM proxies are a valid use case. I do think that all parties should be made aware of it, but that&#x27;s probably something that has to be fixed via laws (I <i>think</i> some European countries forbid this practice unless it&#x27;s been made clear that there can be no expectation of privacy on a company-provided device).<p>[1]: <a href="https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;SecurityEngineering&#x2F;Public_Key_Pinning#How_to_use_pinning" rel="nofollow">https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;SecurityEngineering&#x2F;Public_Key_Pinn...</a>