MALicious INTent Dataset and Inoculating LLMs for Enhanced Disinformation Detection
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arXiv
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| Format: | Preprint |
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2026
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| author | Modzelewski, Arkadiusz Sosnowski, Witold Papadopulos, Eleni Sartori, Elisa Labruna, Tiziano Martino, Giovanni Da San Wierzbicki, Adam |
| author_facet | Modzelewski, Arkadiusz Sosnowski, Witold Papadopulos, Eleni Sartori, Elisa Labruna, Tiziano Martino, Giovanni Da San Wierzbicki, Adam |
| contents | The intentional creation and spread of disinformation poses a significant threat to public discourse. However, existing English datasets and research rarely address the intentionality behind the disinformation. This work presents MALINT, the first human-annotated English corpus developed in collaboration with expert fact-checkers to capture disinformation and its malicious intent. We utilize our novel corpus to benchmark 12 language models, including small language models (SLMs) such as BERT and large language models (LLMs) like Llama 3.3, on binary and multilabel intent classification tasks. Moreover, inspired by inoculation theory from psychology and communication studies, we investigate whether incorporating knowledge of malicious intent can improve disinformation detection. To this end, we propose intent-based inoculation, an intent-augmented reasoning for LLMs that integrates intent analysis to mitigate the persuasive impact of disinformation. Analysis on six disinformation datasets, five LLMs, and seven languages shows that intent-augmented reasoning improves zero-shot disinformation detection. To support research in intent-aware disinformation detection, we release the MALINT dataset with annotations from each annotation step. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_14525 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | MALicious INTent Dataset and Inoculating LLMs for Enhanced Disinformation Detection Modzelewski, Arkadiusz Sosnowski, Witold Papadopulos, Eleni Sartori, Elisa Labruna, Tiziano Martino, Giovanni Da San Wierzbicki, Adam Computation and Language Artificial Intelligence The intentional creation and spread of disinformation poses a significant threat to public discourse. However, existing English datasets and research rarely address the intentionality behind the disinformation. This work presents MALINT, the first human-annotated English corpus developed in collaboration with expert fact-checkers to capture disinformation and its malicious intent. We utilize our novel corpus to benchmark 12 language models, including small language models (SLMs) such as BERT and large language models (LLMs) like Llama 3.3, on binary and multilabel intent classification tasks. Moreover, inspired by inoculation theory from psychology and communication studies, we investigate whether incorporating knowledge of malicious intent can improve disinformation detection. To this end, we propose intent-based inoculation, an intent-augmented reasoning for LLMs that integrates intent analysis to mitigate the persuasive impact of disinformation. Analysis on six disinformation datasets, five LLMs, and seven languages shows that intent-augmented reasoning improves zero-shot disinformation detection. To support research in intent-aware disinformation detection, we release the MALINT dataset with annotations from each annotation step. |
| title | MALicious INTent Dataset and Inoculating LLMs for Enhanced Disinformation Detection |
| topic | Computation and Language Artificial Intelligence |
| url | https://arxiv.org/abs/2603.14525 |