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Crafting evasive phishing URLs: exploiting tokenizer vulnerabilities in transformer-based detection systems

Jul 2026 · International Journal of Machine Learning and Cybernetics · Vol 17 · 0 citations · 42 references

TL;DR

This paper proposes Homoglyph-Guided Beam Search (HG-BS), an adversarial attack framework that generates evasive URLs preserving both visual appearance and functional validity under strict structural constraints, and establishes that current high-accuracy URL detectors rely on fragile token patterns rather than robust semantic understanding.

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