Spike in O365 risky "unfamiliar" sign-ins?

["Jim A. Bole" <jbole () STEVENSON EDU>]

In the past 24 hours we saw a spike in "unfamiliar" sign-in alerts on our O365 tenant.

We are still investigating, but we have some indications in might be due to Microsoft's recent change in their 
algorithm:

https://techcommunity.microsoft.com/t5/Azure-Active-Directory-Identity/Presenting-the-new-Unfamiliar-Sign-in-Properties/ba-p/779978

Is anyone else seeing this?


Jim Bole
Director of Information Security
Stevenson University
1525 Greenspring Valley Road
Stevenson, MD, 21153-0641
jbole () stevenson edu | O: 443-334-2696



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