Spam

Credit to Author: Microsoft 365 Defender Threat Intelligence Team| Date: Thu, 22 Sep 2022 16:00:00 +0000

Microsoft discovered an attack where attackers installed a malicious OAuth application in compromised tenants and used their Exchange Online service to launch spam runs.

The post Malicious OAuth applications abuse cloud email services to spread spam appeared first on Microsoft Security Blog.

Credit to Author: Microsoft 365 Defender Threat Intelligence Team| Date: Thu, 22 Sep 2022 16:00:00 +0000

Microsoft discovered an attack where attackers installed a malicious OAuth application in compromised tenants and used their Exchange servers to launch spam runs.

The post Malicious OAuth applications used to compromise email servers and spread spam appeared first on Microsoft Security Blog.