This emergency shutdown was initiated due to a critical security vulnerability being introduced by the hosting provider for our main web server. Due to this vulnerability having been caused by our hosting provider, we can no longer trust them to host our services as we cannot be sure that it will not happen again.
As a result, all services which were previously hosted on that server will now need to be migrated to a new server. Luckily, we were already planning to do this - albeit at a much more gradual pace - so the new server is already up and running and ready to take over (in fact, that's the server which is hosting this status page).
We're now going to have to migrate everything at once, so there will be significant periods of downtime until everything has been migrated.
We'll keep this incident updated as the situation evolves.