Sophos Home will be ending support for OS X 10.8 Mountain Lion and 10.9 Mavericks on July 15th, 2017. Sophos Home endpoints running on these versions of OS X will no longer receive new features, bug fixes, protection updates and customer support.
The last security update from Apple for OS X 10.8 Mountain Lion was in August 2015, and for 10.9 Mavericks was in July 2016. While Apple continues to provide security updates for more recent versions of macOS, these updates are no longer provided for 10.8 Mountain Lion and 10.9 Mavericks. As a security company we strongly encourage our users to stay current on all operating system and security updates to best protect themselves.
Therefore, if you are currently still running OS X 10.8 or 10.9, we recommend that you upgrade to the latest version of macOS. This will ensure that you receive the latest security and system updates, and continue to enjoy the best protection with Sophos Home.
Thank you again for using Sophos Home, and please contact us via the Community Forums if you have any questions.
The Sophos Home Team