How to avoid meetings (.ics files) be added without me knowing?

The email account of someone I know has been hacked. He has a new email address now.
From his old email address I get mails with appointments (.ics files attached).

The title of those mails contain the former email address, but are sent by strange and unknown account, like blahblha1233-at-gmail.com

Unchecking the option Outlook > File > Options > Mail "Automatically process meeting requests ... etc" could not prevent an .ics file was still added.
Had to remove this manually.

How to prevent this from happening again?

These were my current settings initially.




Added this later.
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But maybe there are still some other settings that I should apply?

Thanks.

Sorry, I should have mentioned it: I use Outlook from Office 365 (subscription).
Actually, I think Microsoft should offer some sort of spam protection in the Microsoft Account, including ... a delete-filter for mails that contain specific words in the title.

As said, the hacked email account is using specific words in the title (the name of the hacked email account) but the sender is different each time.

Right now I am using Mailwasher and I can define rules to mark and delete mails. Outlook should -not- be running then.

However, when Outlook (exchange) is running at the same time, i.e. both Outlook and Mailwasher, such mails are marked in Mailwasher, but because of Exchange, the mail still arrives in my mailbox (of course). 'Washing' mail, will delete the mail from Outlook, but regretfully, the appointment/meeting has already been added then.
The only workaround is to close Outlook each time and have MW do the job, then the mail is deleted -before- Outlook is launched.

Frankly speaking... this is something I forget each time.

Best way is to have spam deleted on the server site, instead of in Outlook.

I believe this is not (yet) possible. Even the "Microsoft 365 Defender" (for organisations) does not include spam filter on text is email body or email title, i.e. in case of changing email addresses, one needs to add a filter for each and every one.

This is a brief in how I handle email from point 3. It's not for everyone, it may seem very cumbersome, but I can damn near guarantee that unless you run an attachment without first scanning it at VirusTotral, you should never have this BS issue again.

For me, I also utilize a Cisco owned website called Spamcop. So on the rare (yes, rare) occasion I do get spam I immediately without hesitation send the e-mail headers on over there. That helps get the ball rolling on preventing this crap. I do the same thing with the rare spam phone call in that I have an FCC account and report all the crap that I may get on my phone there. Believe me when I tell you it's rare for me to even get spam or spam phone calls and text. How is that possible? Control. I control who gets my number, and I never, EVER text some number for this or that. As an example with politicians. How many times do you see their poster say something like, "TEXT FREEDOM to 1234." BAM! Now you're in spam hell.

Anyway, do as you will...


Edit-

Once upon a time I'd also send the e-mail headers to the Federal Trade Commission. LOL Now they just run honeypots or something and don't offer that anymore.

As said, I use Mailwasher.
Mailwasher is the filter before starting to use Outlook.
It shows the mail on the mailserver and deletes spam and/or mail as per your own defined filters.
After doing so it launches Outlook.


That works fine..., as long as Outlook (on Exchange basis) is not running.
If Outlook is running in the background, then
Mailwasher marks the mail as spam, but the mail still arrives in Outlook (because of Exchange).

The mail itself can be deleted by Outlook, no problem, but an attached .ics file already ended up in the Calendar.
It is my experience that deleting the mail will not automatically delete the meeting/appointment in Calendar.
That should be done manually.
(If it is a meeting/appointment within a week or month, okay, one can trace this back easily, but what if a meeting is added for somewhere next year?)

Yes, one can create a rule or a junk mail filter (Junk e-mail options, see my 1st post) to delete such spam with attached ics file.
However, even if such mail is deleted, will the Calendar entry also be deleted then?
(attached .ics file), see thread title.

Just that is something I do not know. Regretfully I do not know how to test this myself.

Would like to thank you all for your contributions!

@Try3 - thanks again .

To be honest, I never use the online version of Outlook. Checked it out just now and the rules that I created in Outlook for Windows are also in the online version, including the one I created just now (the above one).

Let's see/hope that it works out fine.