arXiv AI By Yuantu Luo, Jun Tao, Xiangyu Xu, Linxiao Yu, Kangying Li

Pruned Traffic Trees: Native Semantic Compression with a Protocol-Structured Model Family for Encrypted Traffic Classification

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arXiv AI
1d ago

The Split Protocol Decides the Result: Re-Evaluating Encrypted Traffic Classification

The paper demonstrates that encrypted traffic classification accuracy can be dramatically inflated by the choice of data split protocol. Using the same model and code, macro‑F1 scores drop from 0.992 under a standard random split to 0.567 when flows from a single packet capture are kept on one side of the split, a gap of 0.426 that is statistically significant. The authors evaluate multiple split strategies on QUIC traffic, showing that server‑disjoint splitting harms performance while other splits are comparable, and provide a diagnostic based on single‑identifier probes to identify the appropriate split axis before training.

By Mayan Sharma, Kriti Saini, Devansh Behl
arXiv Machine Learning
Oct 21

LightSplit: Practical Privacy-Preserving Split Learning via Orthogonal Projections (Full Version)

LightSplit introduces a lightweight orthogonal random projection at the split learning cut layer to reduce communication overhead and limit information exposure. By sending low‑dimensional projections instead of raw activations, the method preserves end‑to‑end differentiability while discarding irreversibly part of the representation, thereby mitigating reconstruction attacks. Experiments on seven benchmarks show up to 32× compression with minimal accuracy loss and strong resistance to state‑of‑the‑art inversion attacks.

By Mert Cihangiroglu, Alessandro Pegoraro, Phillip Rieger, Antonino Nocera, Ahmad-Reza Sadeghi