Microsoft Disables MSIX App Installer Protocol Widely Used in Malware Attacks

Dec 29, 2023

Microsoft on Thursday said it’s once again disabling the ms-appinstaller protocol handler by default following its abuse by multiple threat actors to distribute malware.
“The observed threat actor activity abuses the current implementation of the ms-appinstaller protocol handler as an access vector for malware that may lead to ransomware distribution,” the Microsoft Threat Intelligence

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