virus and security
Is it necessary to have anti virus protection on new iMac
iMac 21.5″, macOS 10.15
The BEST antivirus, security, cleaning and overall maintenance app for Mac OS is Mac OS itself. Mac OS does not benefit in any way by adding third party AV, security, cleaning or other types of maintenance apps. Simply keep Mac OS up-to-date and otherwise leave it alone and it should remain secure, stable and quick for many years.