os-software-security.md

All servers on the CSAIL network must run up-to-date and supported operating systems. Each version of CSAIL Ubuntu is supported by Canonical for 5 years after its release, with support concluding at the end of April. All users and research groups are expected to maintain their servers on a regular basis, and to keep them upgraded to a supported and secure operating system version. This also applies to software running on servers within the CSAIL network, which must also be kept on a vendor-supported version.

If a system is running an unsupported operating system version, or if the software isn’t upgraded and causes a potential security issue, it may be removed from the network without warning for the security of the lab.