It never hurts to snag the security updates.
Apple on Wednesday released Security Update 2020-002 for High Sierra and Mojave on March 24. Apple also released macOS Catalina 10.15.4, which includes the same security fixes.
macOS 10.13 High Sierra users can snag the update via the Mac App Store. For macOS Mojave 10.14 and macOS Catalina 10.15 users, the update can be found via the Software Update application in the System Preferences.
Full details of the updates can be found here.
Via The Mac Observer