What? No browser displays a notification when a website changes its cert. It doesn&#x27;t even show you a notification if it changes its <i>key,</i> that&#x27;s the whole point of key pinning: <a href="https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;SecurityEngineering&#x2F;Public_Key_Pinning" rel="nofollow">https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;SecurityEngineering&#x2F;Public_Key_Pinn...</a> (A pin failure results in a <i>non-bypassable</i> HTTPS error: <a href="https:&#x2F;&#x2F;projects.dm.id.lv&#x2F;Public-Key-Pins_test" rel="nofollow">https:&#x2F;&#x2F;projects.dm.id.lv&#x2F;Public-Key-Pins_test</a> )