is apple putting out concerns about mac security

Correct, but only for the following:

Only Big Sur (11.6) and Catalina (Security Update 2021-005) are security updates for macOS. There is a Safari 14.1.2 Security update for Mojave, that updates the existing Safari 14.1.2. Otherwise just iOS/iPadOS 14.8. and WatchOS 7.6.2 received security updates.

Agree with @ Eau Rouge but if not presented with the update - give it some time as in days or maybe weeks for Apple to eventually offer the Update as a Standalone Update usually available from https://support.apple.com/en_CA/downloads/macos

The Pegasus - from News reports is targeting iPhone and other cellular devices. iPhone uses iOS and reports say Apple has issued a patch to fix this issue - iOS 14.8 . Apple Computers use macOS and that is a different OS from iOS.

Unless there are specific creditable and reliable reports of the Pegasus Spyware targeting macOS - would not worry - for now.

Besides - unless the person is in a High Profile Type Function / Job - from the same News Reports on Pegasus - generally Joe Public is of no interest to them, we have no value.

See also here:

Effective defenses against malware and ot… - Apple Community

I haven’t been able to find a download link for the Mojave Security Update for Safari. Where can I find it?

System Preferences> Software Update.

@Eau Rouge: Thanks but I wouldn't have bothered to post without first looking for it there.

Thanks. Will do.

Well you didn't tell us where you had been looking.

Safari updates are only available through the System Preferences> Software Update mechanism,

so where have you been looking.