A small PowerShell Script to quickly find out source IPs in case of a brute force attack on O365 Infra. This can save manual efforts and can improve turnaround time to mitigate the issue in Infrastructures which still not using MFA or ExtraNetLockOut. This is just a basic code. One can set email alerts basis the thresholds or even can write a custom event on any of the server to be picked by SCOM or OMS.

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