If you've not heard by now and this is your first time hearing it, there's a 0-day in the wild that has been dubbed "HAFNIUM." HAFNIUM targets the following Exchange server versions: Microsoft Exchange Server 2013  Microsoft Exchange Server 2016  Microsoft Exchange Server 2019  Exchange Online is not affected.  The vulnerabilities being exploited are CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and … Continue reading How to Use Azure Sentinel to Protect Against the Exchange Zero-day →