Mac users should periodically check the contents of:
/Users/yourself/Library/LaunchAgents
/Library/LaunchAgents
/Library/LaunchDaemons
Remove anything from these folders with a software name you don't recognise or that should not be starting up when you boot or log on without you knowing or asking it to.
Even if you delete something bona fide, it won't do any damage, it will just mean something like Adobe Autoupdater or Dropbox won't run automatically until manually run again.
Biting the hand that feeds IT
