Both Apple and Microsoft have built in systems that prompt you to install functional and security updates for the operating system and some of their other apps. Neither operating system will update apps/software from other companies.
Apple does not have an official policy about how many versions of their operating system they supply security updates for, but they generally support the three most recent versions. The most recent versions are currently Big Sur, Catalina and Mojave. It is not safe and is against UBC policy to use an older version of macOS, like High Sierra, Sierra or El Capitan. If you can not upgrade to one of the three most recent versions, you will need to replace your computer with a newer model.
Microsoft publishes their support lifecycle, which includes Windows 8.1 and Windows 10. Us Windows Update to install them. It is not safe and is against UBC policy to use an older version of Windows, like Windows XP, 7 or 8.0
If you are not supported by Psychiatry IT, it is up to you to keep apps/software from other companies up to date. Of particular importance are web browsers like Google Chrome and Firefox, which have “critical” rated security updates many times per year. The default settings for Chrome will cause it to update on its own, provided you quit and restart it regularly. You can check for updates in both Chrome and Firefox, through their Help/About menus.
Below are a few of the most common security updates, from the past few weeks, that you may need to install to keep your computer secure. You can often download updates using the apps help menu. Please contact firstname.lastname@example.org, if you would like an updated list, at any point.