How to prevent this spam to Calendar?

[MacAlien]

I keep getting this stuff populating my Calendar app since Sierra was introduced. Is there a setting to prevent this crap?

http://imgur.com/a/1dXlK

 

[raymond7]

Im getting the same spam calender invitation from a chinese name as well. Is iCloud hacked or something?

 

[BrianBaughn]

In Mail>Preferences>General is "Add invitations to Calendar" set to "Never" or "Automatically"?

 

[MacAlien]

In Mail>Preferences>General is "Add invitations to Calendar" set to "Never" or "Automatically"?

Already set to Never. :\

 

[BrianBaughn]

It's an iCloud calendar?