Alon Rosen is a full professor at the Department of Decision Sciences, Bocconi University, Milan. His areas of expertise are in theoretical computer science and cryptography. He has made contributions to the foundational and practical study of zero-knowledge protocols, as well as fast lattice-based cryptography. He co-introduced the ring-SIS problem and related SWIFFT hash function, as well as the Learning with Rounding problem. More recently he has studied the cryptographic hardness of finding a Nash equilibrium in a game, as well as average-case fine-grained hardness and applications to cryptography.