Johannes Stillig has been Group CISO of a global asset manager since 2019 and sits on several advisory boards. He started in penetration testing and digital forensics, then built the cyber-security practice of a London law firm, from scratch. MSc Information Security, Royal Holloway. He now builds an investigations engine where every finding must trace to the bytes it came from, and writes about evidentiary reliability in AI, mostly by documenting what his own broke.