macOS support means a security product can see, manage, and respond to activity on Apple desktop systems as part of an enterprise stack. In practice, that includes collecting endpoint telemetry, enforcing policies, detecting suspicious behavior, and triggering response actions on Macs, not just on Windows or Linux hosts.
This matters because mixed fleets are common, and any platform that lacks macOS coverage creates a blind spot attackers can exploit. Threats on macOS include malware, credential theft, persistence mechanisms, and abuse of legitimate tools. When defenders have macOS support, they can apply the same detection rules, threat intelligence, and remediation workflow across more endpoints, improving consistency during triage and containment. The quality of that coverage depends on how much telemetry the agent can collect and how well detections are tuned, but without it, defenders may miss activity or respond too slowly.