Advice Microsoft security on-premise Exchange Servers

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31 jan, 2023

Microsoft urges customers to secure on-premises Exchange servers. Read an official message from Microsoft here. In addition to keeping it up to date, Microsoft also recommends adding additional security to the environment by enabling Windows Extended Protection and configuring certificate-based signing of PowerShell serialization payloads.


There are several aspects of unpatched on-premises Exchange environments that are valuable to hackers. Examples of this are;

  1. User mailboxes often contain critical and sensitive data.
  2. Each Exchange server has a copy of the corporate directory, which contains a lot of information useful for social engineering attacks, including organizational structure, titles, contact information, and more.
  3. Exchange has deep hookups and permissions within Active Directory, and access to the connected cloud environment in a hybrid environment.

Specialist in on-premise Exchange licenses

Vidasoft is the supplier for purchasing on-premise Exchange licenses. Vidasoft’s expert team focuses on offering Microsoft volume licenses in the B2B market segment.