How One Compromised User Account Led to a Major Data Breach on French Government’s Secure Chat Platform

Need a relevant story to demonstrate to the Board how just one user can have a massive impact? https://www.bleepingcomputer.com/news/security/french-govt-says-tchap-breach-affected-over-73-000-accounts/ The 'secure chat' platform for the French government was compromised by a single socially engineered user account, allowing the attack to access 643k messages, download 13Gb of media and access restricted messages..