Not sure what to make of this. The contents of the invite show:


 



Organizer
DAVID DEITHER LAURENTE QUISPE
[email protected]

and ayacucho.edu.pe mail is handled by 1 aspmx.l.google.com

So these aren't free accounts - spammers compromised entire tenants
and created their own accounts there in order to receive mail back ?

Scott

On Wednesday, 12/11/2025 at 06:29 Hans-Martin Mosner via mailop wrote:



 

Am 11.11.25 um 17:25 schrieb Scott Q. via mailop: 

 

But these seem like legitimate Google issued invites, not faked in any
way - maybe compromised accounts ?



Anyone from Google can chime in if you are aware of this issue ? We
can't really start scoring/blocking Google calendar invites, or can we
?



 

They are Google. Do you seriously expect them to care?



Most likely the accounts used to send have been created for the
purpose of spamming. Handing out free anonymous accounts is what makes
Google attractive to spammers (and the fact that these accounts can
stay active for sufficient time despite being reported as spam
sources).



Doing something at the receiving end is pretty difficult, as the
difference between unwanted and wanted invites isn't clear in the
general case. You might be able to detect URLs within the text that
indicate unwanted stuff, anf you might treat invites from senders who
have had previous contact with the recipient as likely desired, but
all of this is very error-prone.



Cheers,
Hans-Martin
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