It sounds to me like Micro Snitch (or rather a helper contained in it that is used to launch Micro Snitch when you log in) cannot be executed because it is quarantined. I assume you downloaded Micro Snitch from our website? If you then unzipped and moved the app to the Applications folder, Finder should have removed the quarantine flag, but sometimes this doesn’t work properly. To fix this, you’ll have to remove that flag manually using the Terminal. But you have removed Micro Snitch already, so there’s nothing you could remove that flag from ¯\_(ツ)_/¯
Could you please install Micro Snitch again, open its preferences, and uncheck “Open at login”? This should tell macOS to remove Micro Snitch from the things to launch, which should make these messages to appear.
If you decide you want to keep using Micro Snitch and these messages appear again, you can use the following command in Terminal to remove the quarantine flag:
Code: Select all
xattr -rd com.apple.quarantine "/Applications/Micro Snitch.app/"