Data Party THU

Jul 16, 2026 · Artificial Intelligence

Can Overthinking in Large Language Reasoning Models Trigger DoS Attacks? A New Risk Unveiled

Researchers from Zhejiang University and Alibaba Security reveal that large language reasoning models can be forced into excessive, self‑correcting reasoning—'overthinking'—by crafted inputs, dramatically inflating token output and computation cost, enabling a novel black‑box DoS attack demonstrated via a Hierarchical Genetic Algorithm.