Tomislav has built the Zero Trust technology stack for Qontigo and ISS-Stoxx at Deutsche Börse Group together with team. In his roles as CISO and Managing Director of IT and Security he has passionately defended zero trust strategies for large enterprises which sparked his interest in identity security. His experience has taught him that we have to assume that the perimeter is breached so he has enabled his companies to trust no-one and verify everything. He is currently exploring the possibilities of extending the use of certificates for this purpose.