This prize is awarded at the Real World Crypto conference, which has become a pretty big deal. RWC is unlike normal academic crypto conferences in that it hosts practical engineering work and case studies from people deploying crypto --- but the attendance list includes many leading people in the academic field.
Last year's Levchin winners were Phil Rogaway (a cryptographer of fame comparable to that of Joan Daemen) and the miTLS team (which discovered the Triple Handshake, SMACK, FREAK, Logjam, and SLOTH TLS attacks).