How to stop receiving spam on Google Calendar, Do you want to get rid of "spam" invitations that constantly appear on Google Calendar? Then please refer to how to block spam
Google Calendar is being attacked by hackers who are spoofing email headers to access users' private information.
All Google services drain your battery and violate your privacy. Fortunately, you can limit the amount of data they share with Google and the amount of battery they use by uninstalling, disabling or reconfiguring them.