This case study examines Mizuho Securities Co., Ltd. approach to monitoring voice interactions. Mizuho Securities began an overhaul of their approach to monitoring voice interactions, beginning with their retail & business banking headquarters, in early 2017. Driven by Mizuho Securities’ compliance department with heavy input from the front office, the primary aim of this initiative is to better ensure fiduciary duties are met by improving the scope, quality, and efficiency of voice surveillance...