LeakyDSP: Exploiting Digital Signal Processing Blocks to Sense Voltage Fluctuations in FPGAs - Xin Zhang; Jiajun Zou; Yang, Yi; Qingni Shen; Zhi Zhang; Yansong Gao; Wu, Zhonghai; Trevor E. Carlson (62nd ACM/IEEE Design Automation Conference, DAC 2025, San Francisco, CA, USA, June 22-25, 2025, 2025)