%0 Conference Proceedings %T Leak, Cheat, Repeat: Data Contamination and Evaluation Malpractices in Closed-Source LLMs %A Balloccu, Simone %A Schmidtová, Patrícia %A Lango, Mateusz %A Dusek, Ondrej %Y Graham, Yvette %Y Purver, Matthew %S Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics (Volume 1: Long Papers) %D 2024 %8 March %I Association for Computational Linguistics %C St. Julian’s, Malta %F balloccu-etal-2024-leak %R 10.18653/v1/2024.eacl-long.5 %U https://aclanthology.org/2024.eacl-long.5/ %U https://doi.org/10.18653/v1/2024.eacl-long.5 %P 67-93