A number of serious security vulnerabilities affecting multiple CPU architectures were recently disclosed by Google's Project Zero team. In order to address the disclosed vulnerabilities, the physical hardware on which our server resides will need to undergo maintenance at 2018-01-19 12:00 AM EST. This is the first of several separate maintenances that will be necessary to fully mitigate these vulnerabilities. This maintenance specifically patches the Meltdown vulnerability; the Spectre vulnerability will be addressed in a future maintenance cycle. We will inform you of these maintenance cycles via additional tickets.
This downtime should last less than 2 hours. Thank you for your understanding in advance!