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The University requires that all computers connected to the University's network via ethernet or Wi-Fi be using up to date anti-virus software.
Yes, Apple macOS computers are susceptible to malware and viruses. So this requirement holds true for Mac users.
There are several free anti-virus packages for macOS: the one UD recommends is avast.
Download the software from the avast website.
Follow the directions at the avast site to install, set up automatic updates, and use the software.