ETA: Now I know How that spam wrote to my Calendar app?

[jesse_the_k]

Suddenly three spam ads appeared on my Calendar app (both Mac & iOS). I didn't see a .vcf attached to an incoming mail. They're not flagged as "found in mail," nor are they assigned to any of my calendar categories.

How is this possible? How do I stop it happening?

If I decline the calendar item then the spammer knows my address. When I select to delete it, the options are "cancel" and "decline." How do I get rid of it without alerting the spammer?

I thought I didn't have to worry about this because I used a Mac.

Grr. Argh.

ETA: answers in first response.

Comments

[syderia]

Here through the network page, and as it happened, I saw an article on this just the other day : http://arstechnica.com/information-technology/2016/11/how-to-stop-the-wave-of-apple-calendar-alert-spam/
Hope it helps!

[jesse_the_k]

Thanks for the quick reply, and it seems that the crucial keyword is "calendar spam ray-ban" it's happening all over.

I wish I could count on Apple to prevent this shit.

Oh! Im not alone

[jesse_the_k]

I should have googled before I posted. None other than the NYTimes has one answer
http://www.nytimes.com/2016/11/25/technology/personaltech/fighting-ios-calendar-spam.html

While Stack Exchange provides two.
http://apple.stackexchange.com/questions/258424/spam-icloud-calendar-invitation

In summary: it's coming via iCloud; set your iCloud prefs to invite via email to prevent others posting to your calendar. When it arrives in email, you can delete as before.

[green_knight]

I simply went and deleted my 'work' calendar where the spam was related; but thanks for following through - this was most annoying spam.