Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs on Windows Server operating systems and provides email, calendaring, and scheduling features to users.
Cyberattackers are compromising Microsoft Exchange Servers by using malicious OAuth apps. These apps have been designed to trick users into granting them access to their Exchange accounts, allowing attackers to steal sensitive information.
This cyberattack can have severe consequences for organizations using Microsoft Exchange Servers. It can result in data theft, financial losses, and damage to the organizations reputation.
One way organizations can protect themselves is by regularly monitoring their Exchange Servers for any suspicious activity. They should also educate their employees about the risks of malicious OAuth apps and encourage them to be cautious when granting permissions.
If users suspect that their Exchange Server has been compromised, they should immediately disconnect it from the network and notify their IT department. They should also change their passwords and review their account activity for any unauthorized access.
Microsoft is actively working to address this security issue by releasing security updates and patches to prevent further attacks. They are also providing guidance to organizations on how to secure their Exchange Servers and mitigate the risk of cyberattacks.
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Microsoft Exchange Servers compromised by malicious OAuth apps.