There was an Incident this afternoon; Fangu reported TLS wasn't loading for her. I tried to log into the site remotely, but that timed out as well; it seemed completely inaccessible.
I triggered a reboot from our host's control panel, which brought the site back online after a few minutes. I did some digging into the logs, but could not find any traces of a DDOS or malice or anything like that; all I could find was that somehow, something triggered a shutdown of the server. I couldn't find anything that triggered it though.
Random theory popped up; could have been unplanned server maintenance or a power outage at our host, which in turn triggered an emergency shutdown. or something. That's probably reaching though, and I'd expect our host to inform us of that. Can't find anything about that either.
TL;DR unexpected server shutdown; I don't think it's related to any recent events or discoveries (like that backdoor script I found last night).