How should I test my security measures when providing Open Banking services?

European Banking Authority (<a href="/glossarycollection/european-banking-authority" style="color:#48277C;" target="_blank" title="European Banking Authority"><u>EBA</u></a>) guidelines [EBA/GL/2017/17] require that Payment Service Providers (<a href="/glossarycollection/payment-service-provider" style="color:#48277C;" target="_blank" title="Payment Service Provider"><u>PSP</u></a>) must establish and implement a testing framework that validates the robustness and effectiveness of any security measures, and ensures that this testing framework is adapted to consider new threats and vulnerabilities as identified through risk-monitoring activities.