You are right of course, but there are apparently a whole lot of people of the opinion that since Chrome was (one of the?) first apps implementing some sort of pinning, that this is <i>de facto</i> what certificate pinning &quot;is&quot;.<p>I don&#x27;t really agree with that, but it&#x27;s IMO more useful to acknowledge the confusion, than having an argument about whether Chrome really does pinning or even gets to <i>de facto</i> define pinning or not, since this isn&#x27;t even about Chrome :)