Everything old is new again. From 2012, the first(?) time this was a widespread issue on the web: https://www.theverge.com/2012/6/29/3126837/google-plus-events

Everything old is new again. From 2012, the first(?) time this was a widespread issue on the web: https://www.theverge.com/2012/6/29/3126837/google-plus-events-calendar-spam-fix https://www.theverge.com/2012/6/29/3126837/google-plus-event... and Google has been enduring calendar spam for years beyong Google+: https://support.google.com/calendar/forum/AAAAd3GaXpE5kUOfyIaH-I/?hl=en&msgid=WdakwcN1AgAJ&gpf=d/msg/calendar/5kUOfyIaH-I/WdakwcN1AgAJ https://support.google.com/calendar/forum/AAAAd3GaXpE5kUOfyI...