In macOS 10.15.4 and 10.15.5, a warning message notifies you that kernel extensions will no longer be supported in future Apple updates.
No need to panic, Malwarebytes is aware of this upcoming change and are working to upgrade our kernel extension to Apple's new Endpoint Security framework.
All you need to do is update your Mac endpoints to the latest version of the macOS Endpoint Agent software. In the Malwarebytes Nebula console, select your Mac endpoints and initiate a Check for Software Updates action. For instructions, see our Perform actions on endpoints in Nebula article.
For more information, see Apple's About Legacy system extensions article.