Author

Dominik Merli

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Preprint Sep 2026

Improving the Reliability of Anomaly Detection for Encrypted OPC UA Traffic over Private 5G

Open Platform Communications Unified Architecture (OPC UA) is increasingly deployed over private 5G networks in industrial environments, where end-to-end encryption prevents payload inspection by network-based intrusion detection systems (IDSs). Although payload-agnostic statistical features extracted from encrypted tr...

Son-Ha Song, Florian Foerster, Henry Beuster et al. · 0 citations

Jul 2026

Residual Observability and Attack Detectability in Encrypted OPC UA Traffic

OPC Unified Architecture (OPC UA) encryption conceals application-layer semantics and restricts intrusion detection to residual communication structure. Although machine learning-based intrusion detection systems (IDSs) can detect attacks in encrypted OPC UA traffic, the relationship between residual structural observa...

Son-Ha Song, Florian Foerster, Henry Beuster et al. · arXiv.org · 0 citations