@inproceedings{tomar-etal-2025-unsafechain, title = "{U}nsafe{C}hain: Enhancing Reasoning Model Safety via Hard Cases", author = "Tomar, Raj Vardhan and Nakov, Preslav and Wang, Yuxia", editor = "Inui, Kentaro and Sakti, Sakriani and Wang, Haofen and Wong, Derek F. and Bhattacharyya, Pushpak and Banerjee, Biplab and Ekbal, Asif and Chakraborty, Tanmoy and Singh, Dhirendra Pratap", booktitle = "Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics", month = dec, year = "2025", address = "Mumbai, India", publisher = "The Asian Federation of Natural Language Processing and The Association for Computational Linguistics", url = "https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.findings-ijcnlp.75/", pages = "1233--1247", ISBN = "979-8-89176-303-6" }