Ethan Heilman joined BastionZero as Founder/CTO in 2020. Ethan has spent five years improving the security and privacy of cryptocurrencies. He is the author of 8+ technical papers on cryptocurrency and blockchain security, as well as one paper which broke the security of SHA-3 candidate Spectral Hash. Ethan is a PhD candidate at Boston University, an inventor of the Bitcoin privacy protocol TumbleBit, and has contributed security improvements to the Bitcoin Core codebase. He is the recipient of a IETF/IRTF Applied Networking Research Prize, and was nominated for a Pwnie in the category of Best Cryptographic Attack. Ethan previously designed cryptologic software and built genomic tools for the Broad Institute. In his spare time, he enjoys breaking cryptographic hash functions.