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Isabel Praça

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#artificial intelligence Preprint Sep 2026

Micro-Collaborative Poisoning: A Distributed Attack on RAG Systems

The results indicate that Micro-Collaborative Poisoning is not driven by a single dominant poisoned passage, but by the accumulation of weak adversarial signals across retrieved sources, which achieves downstream influence while leaving a weaker explicit poisoning signature than direct poisoning.

Pedro Pereira, Eva Maia, Isabel Praça · 0 citations
Conference Open access 2026

Generalizing across Networks: Evaluating Model Transferability for Intrusion Detection

This study evaluates the generalization capability of models such as LGBM, RF, XGB, and LSTM, particularly in identifying previously unseen attacks, and investigated the impact of feature selection on generalization and examined how performance changes when combining different datasets.

Miguel Silva, J. Vitorino, Daniela Pinto et al. · 0 citations

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