The QuasiLeak-Bench data (the files in quasileak_bench_data.zip) is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/4.0/ The full legal code is at https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode 300 of the 500 sender profiles are adapted from SynthPAI (Yukhymenko et al., 2024, arXiv:2406.07217), which is released under the same license. Copyright (c) 2026 QuasiLeak-Bench Contributors