Ensure notifications for internal users sending malware is Enabled

SrednjaNivo 1Ručni pregledm365

Opis

Exchange Online Protection (EOP) is Microsoft's cloud-based filtering service that protects organizations against spam, malware, and other email threats. EOP is included in all Microsoft 365 organizations with Exchange Online mailboxes. EOP uses flexible anti-malware policies for malware protection settings. These policies can be set to notify Admins of malicious activity. This setting alerts administrators that an internal user sent a message that contained malware. This may indicate an account or machine compromise that would need to be investigated.

Kako se proverava

Metod provere: Ručni pregled

Ova preporuka se ne može proveriti automatski. Skeniranje je navodi sa ovim uputstvima kada prosledite --include-manual.

To audit using the UI: 1. Navigate to Microsoft Defender https://security.microsoft.com. 2. Expand E-mail & Collaboration > Policies & rules. 3. On the Policies & rules page select Threat policies. 4. Under Policies select Anti-malware. 5. Click on the Default (Default) policy. 6. Verify that Notify an admin about undelivered messages from internal senders is set to On and that there is at least one email address under Administrator email address. To audit using PowerShell: 1. Connect to Exchange Online using Connect-ExchangeOnline. 2. Run the following command: Get-MalwareFilterPolicy | fl Identity, EnableInternalSenderAdminNotifications, InternalSenderAdminAddress 3. Verify that EnableInternalSenderAdminNotifications is set to True and a InternalSenderAdminAddress address is defined. Note: Audit and Remediation guidance may focus on the Default policy however, if a Custom Policy exists in the organization's tenant, then ensure the setting is set as outlined in the highest priority policy listed.

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

To remediate using the UI: 1. Navigate to Microsoft Defender https://security.microsoft.com. 2. Expand E-mail & Collaboration > Policies & rules. 3. On the Policies & rules page select Threat policies. 4. Under Policies select Anti-malware. 5. Click on the Default (Default) policy. 6. Click on Edit protection settings and change the settings for Notify an admin about undelivered messages from internal senders to On and enter the email address of the administrator who should be notified under Administrator email address. 7. Click Save. To remediate using PowerShell: 1. Connect to Exchange Online using Connect-ExchangeOnline. 2. Run the following command: Set-MalwareFilterPolicy -Identity '{Identity Name}' - EnableInternalSenderAdminNotifications $True -InternalSenderAdminAddress {admin@domain1.com} Note: Audit and Remediation guidance may focus on the Default policy however, if a Custom Policy exists in the organization's tenant, then ensure the setting is set as outlined in the highest priority policy listed.

Svojstva

Operativni sistemi: Bilo koji
Oznake: m365saas
Referenca: CIS Microsoft 365 Foundations Benchmark v7.0.0 - 2.1.3 Ensure notifications for internal users sending malware is Enabled