Hi Freddie,
Do you actually have McAfee installed on your Mac? Also, how many different AntiVirus apps do you have installed?
If you have more than 1, you may be getting false positives.
My 1st guess would be that McAfee is reading the definitions of clam or abother AV app as a false positive.
If you do not have a McAfee subscription, or do not plan on getting one then the 1st step to get rid of the alerts is to totally uninstall McAfee. I would recommend running their uninstaller, and then do a system search for any file with the name McAfee in it. To do the search I like a tool called EasyFind by Devon Technology (
https://www.devontechnologies.com/apps/freeware)
If you do plan on getting a McAfee subscrition then uninstall ClamXAV.
For most Mac users an AV app is not needed, if you do feel that you need an AV app, how you use your Mac will determine wich AV app will work best for you.