Input-Layer Starvation: Why Per-Layer Pruning Breaks IoT Intrusion Detectors

Intrusion detectors for small Internet-of-Things IoT devices are usually compressed by pruning and judged by overall accuracy. We show that this hides a severe class-level failure, find its cause, and give low-overhead prevention and repair. On CICIoT2023, a two-layer convolutional detector prune...