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ProxyShell

Microsoft Exchange Throttling Blocking

What is Going on With Microsoft Exchange Server Throttling and Blocking?

April 17, 2023 Zachary Comeau Leave a Comment

Microsoft is hoping to address the security issue of emails sent to Exchange online from unsupported and unpatched Exchange Servers by enabling a transport-based enforcement system in Exchange Online that will throttle and then block emails from an unsupported server. The end goal is to encourage Microsoft customers to stop using persistently vulnerable versions of […]

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Microsoft Security RSA Conference

Two New Exchange Vulnerabilities Are Being Actively Exploited

October 3, 2022 Zachary Comeau Leave a Comment

Microsoft is warning organizations to mitigate two zero-day vulnerabilities in Exchange Server that are being actively exploited in the wild and can result in hands-on-keyboard access and Active Directory reconnaissance and data exfiltration. The vulnerabilities are CVE-2022-41040–a server-side request forgery (SSRF) vulnerability–and CVE-2022-41082–a remote code execution bug via Exchange PowerShell. According to Microsoft, CVE-2022-41040 can enable […]

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