There’s a critical security vulnerability in Firefox 49 and 50, and Mozilla just released Firefox 50.0.1 to address it. Which is great, except for one thing: the total lack of anything resembling an announcement.
Yes, Firefox can be configured to update itself or alert you when an update is available, but that setting can also be disabled completely. Worse, it can take days for Firefox’s internal update checker to detect that there’s a new version.
I discovered the new version by way of a post on the US-CERT site.