Author

Xin Hu

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Preprint Oct 2026

Agentic Backdoors via Pretraining Poisoning

Large language models are pretrained on vast, uncurated corpora scraped from the public web. This creates a security risk from attackers who plant poisoned content in the pretraining data. We show for the first time that such poisoning can plant a remote code execution backdoor in an agent, causing it to execute attack...

Xin Hu, Ping-Bang Hu, Chloe Loughridge et al. · 0 citations

Preprint Oct 2026

Beyond Tokens: NumAnchor for Address-Grounded Numeric Operand Representation in Assembly Language Models

Assembly language models (ALMs) are becoming important for automated binary analysis, yet their token-level interfaces often obscure numeric-like operands. In two corpora, such operands account for 45.7% and 40.9% of operand occurrences and may denote branch targets, global data, stack slots, constants, or unresolved p...

Kun Liu, Keith Mitchell, Xin Hu et al. · 0 citations