Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I've just been sending the headers of each and every one that doesn't get filtered by [0-9].onmicrosoft.com to cdoccm@microsoft.com and report_******@outlook.com. It was 38 yesterday. Before I put that refuse connection rule in, I was doing 110+/day. It's crazy that MS hasn't gotten a handle on their problem with as many samples as we've all sent in.