Kernel eviction notice: What wesp.sys reveals about the Windows Endpoint Security Platform

Elastic Security LabsOctober 26, 2026Endpoint

Microsoft wants EDR out of the Windows kernel, and the preview binaries show wesp.sys telling a user-mode client that a process is starting, with nothing in its imports to let that client block it.

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DefenceEDR · Endpoint detection and responseSecurity software on laptops and servers that watches behaviour to detect and stop attacks.

Kernel eviction notice: What wesp.sys reveals about the Windows Endpoint Security Platform

Explained

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