i would go with zenzen. Install Clam AV and run it manually on a regular base.
A recent article: https://www.bleepingcomputer.com/news/security/new-sysjoker-backdoor-targets-windows-macos-and-linux/
There are far less virusses for macOS and Linux then for Windows, but there are far more virusses for macOS and Linux then there where 10 years ago. Caution can only do so much.