TAPGuard: A Semantic-Aware Graph Framework for TAP Rule Cascading Threat Detection

Summary

TAPGuard is a semantics-enhanced framework for modeling rule linkages and detecting cascading threats in Trigger-Action Programming rules for smart home devices. It uses large language models to extract structured semantic elements from natural language rule descriptions, then applies a dual-relation context encoder with node-level and semantic-level attention to reason across multi-hop dependencies. Evaluated on a real-world smart home dataset, it significantly outperforms state-of-the-art graph-based baselines.