DuCodeMark: Dual-Purpose Code Dataset Watermarking via Style-Aware Watermark-Poison Design

Yuchen Chen, Yuan Xiao, Chunrong Fang, Zhenyu Chen, Baowen Xu

Abstract

The proliferation of large language models for code (CodeLMs) and open-source contributions has heightened concerns over unauthorized use of source code datasets. While watermarking provides a viable protection mechanism by embedding ownership signals, existing methods rely on detectable trigger-target patterns and are limited to source-code tasks, overlooking other scenarios such as decompilation tasks. In this paper, we propose DuCodeMark, a stealthy and robust dual-purpose watermarking method

Categories

Cite This Resource

@article{llmsec202600146,
  title = {DuCodeMark: Dual-Purpose Code Dataset Watermarking via Style-Aware Watermark-Poison Design},
  author = {Yuchen Chen and Yuan Xiao and Chunrong Fang and Zhenyu Chen and Baowen Xu},
  year = {2026},
  url = {https://arxiv.org/abs/2604.10611},
}