Xinrui Zhang 0008 Qin Wang 0008 Rujia Li 0001 Qi Wang 0012 Frontrunning Block Attack in PoA Clique: A Case Study. 2022 abs/2205.10257 CoRR https://doi.org/10.48550/arXiv.2205.10257 db/journals/corr/corr2205.html#abs-2205-10257