Endpoint security systems and methods with telemetry filters for event log monitoring

Abstract

An endpoint agent is enhanced with a kernel-level event tracing facility, an event manager having telemetry filters, a persistence manager, and a detection engine. The endpoint agent receives an instruction from a controller system to enable a selection of filters, including a custom-built telemetry filter for the kernel-level event tracing facility which feeds events to the event manager as they are occurring. The event manager determines which enabled telemetry filters are applicable to the events, apply them to identify events of interest, and provide those events to the detection engine which, in turn, applies detection filters to the events of interest to detect possible threats to the endpoint. The telemetry filters are evaluated in memory as the events are occurring. To increase the speed of processing, expression trees representing the telemetry filters can be compiled into machine code just in time of execution. The machine code executes extremely fast natively.