"Privacy-Preserving Federated Deep Intrusion Detection for Semantic Communication Networks"
Abstract
"Semantic communication is emerging as a core paradigm for sixth-generation networks, shifting transmission from raw data toward the exchange of meaning. While this enables efficiency and adaptability, it also raises new privacy risks when intrusion detection models are trained collaboratively across distributed network sites. This article presents a privacy-preserving federated learning architecture for intrusion detection in semantic communication networks. The approach combines federated model aggregation with differential privacy to enable collaborative learning while limiting the exposure of sensitive traffic patterns at participating sites. We introduce a threat model that captures honest-but-curious coordinators, malicious participants, and external adversaries. Through an illustrative case study, we illustrate how privacy mechanisms affect detection performance and demonstrate that meaningful privacy protection can be achieved with acceptable utility loss. Based on these observations, we offer practical guidance for privacy budget selection and discuss key challenges in deploying privacy-aware intrusion detection systems in future semantic communication environments. "
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