Hacking as a Service
Multiple times a year we let our product and infrastructure be tested by independent, world class, researchers. Not only from the outside (black box testing), but also from the inside by giving the researchers accounts (grey box testing) and even the full source code of Zivver (white box testing).
Currently we collaborate on this topic with the Hacking as a Service team of Deloitte. Every subsequent test Deloitte challenges us if we have taken appropriate measures to mitigate risks they have found in our product or infrastructure.