If you use any other sort of computer in Informatics, it’s up to you to keep it updated with the latest fixes. See meltdownattack.com for a comprehensive list of links to security advisories from affected companies.
It’s usually a good idea to configure the operating system to automatically install the latest recommended fixes. This Microsoft page explains how to configure automatic updates for Windows 10 and for Windows 7, and this Apple page explains how to do it for Macs. Linux distros have their own arrangements, but for example this Ubuntu page explains how to configure automatic updates. Phones should also be kept up to date.