Due to the integration of new and legacy technologies in 5G and applying Artificial Intelligence (AI) and Machine Learning (ML) which are bring more benefits of innovation and supplier diversity in an open market, are expected to experience new challenges to deploy Open RAN; clearly, the low maturity of the technology and also new features like more Open interfaces, multi-vendor integration, multiple slices with different SLA and virtualization and softwarization presents security and trust issues that need to be address, Which secrity aspect do you think is more important?