Google Calendar - Protecting against calendar spam

[jthompson]

After having some spam calendar events appear in my private Google account over the weekend, I thought I'd try and head off any risk of that in our G Suite domain, but can't see a way how. Basically, a meeting invitation is sent to Gmail addresses and the default settings on Google Calendar mean that that event will appear in the calendar (titled "Congratulations You've won an iPhone!!", that kind of thing). A couple of options in Google Calendar can prevent that from happening:

 

Settings -> General -> Event Settings -> Automatically add invitations

Settings -> General -> Events form Gmail -> Automatically add events from Gmail to my calendar

 

Does anyone know of a way to adjust these settings in bulk? There doesn't appear to be any control in Google Admin and I can't find anything for it in GAM. Just wondering if anyone else has tackled this.