Papers by Dominik Meier
TrojanStego: Your Language Model Can Secretly Be A Steganographic Privacy Leaking Agent (2025.emnlp-main)
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| Challenge: | Existing work has focused on the (un)intended leakage of sensitive information through LLM outputs. |
| Approach: | They propose a threat model that embeds context information into natural-looking outputs via linguistic steganography without requiring explicit control over inference inputs. |
| Outcome: | The proposed model transmits 32-bit secrets with 87% accuracy on held-out prompts and can reach over 97% accuracy using majority voting across three generations. |
Towards Human Understanding of Paraphrase Types in Large Language Models (2025.coling-main)
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| Challenge: | Current paraphrase evaluations of language models use binary approaches, offering limited interpretability of specific text changes. |
| Approach: | They introduce a dataset of 800 sentence-level and word-level annotations by 15 annotators and a human preference ranking of paraphrases with different types. |
| Outcome: | The proposed model can generate simple APTs, but struggle with complex structures (e.g., subordination changes). |