Quick answer
macOS has strong built-in protection, but it's not invulnerable — for business use handling sensitive data, an extra layer of protection is still a sensible choice.
The myth that “Macs don’t get viruses” was truer years ago, when fewer people had Macs. Today, with their popularity, they’re also a target — just less frequently than Windows.
What macOS already does
macOS has built-in protection systems (Gatekeeper, XProtect) that automatically block many known threats without extra software. For careful personal use, that’s often enough.
When extra protection is worth it
For business use — especially with access to client data or financial records — an extra layer of protection (endpoint security) adds meaningful safety, particularly against phishing and ransomware.
- macOS has strong built-in baseline protection
- Careful personal use: usually enough
- Business use: extra protection recommended