Microsoft announced today that it will retire Client Access Rules (CARs) in Exchange Online within a year, by September 2023. CARs are sets of conditions, exceptions, actions, and priority values that ...

Threat actors are now actively scanning for the Microsoft Exchange ProxyShell remote code execution vulnerabilities after technical details were released at the Black Hat conference. Before we get to ...

Update 26.3.2024: While not on the same scale as 2021's Microsoft Exchange Server hack (see below this update), security problems impacting Exchange Server have reemerged. In March 2024's monthly ...

Microsoft has identified one of the critical vulnerabilities in Exchange Server that the company disclosed in February's Patch Tuesday update as actually being a zero-day threat that attackers are ...