Systems Security
Building a Low-Latency Windows Endpoint Agent
Date Published
The latency budget
An endpoint agent lives inside every filesystem operation the user performs. Every millisecond of overhead is multiplied by thousands of events, so the design starts with a hard budget: the interception path must never block, and the analysis path must be allowed to lag behind it.
Splitting interception from analysis
The core module normalises each file event into a compact record and hands it to a bounded queue. Analysis workers pull from that queue independently, so a slow heuristic scan can never stall the driver callback.
Crash resilience
Background services persist in-flight work transactionally. On restart the agent replays the pending window instead of dropping it, which keeps detection coverage continuous across service crashes and host reboots.