Open network infrastructure and open APIs, will uncover new 5G Network capabilities and provide universal access for operator networks, developers and hyperscalers alike. This will help cloud providers and developers enhance existing services and deploy new services, and foster collaboration, innovation, and interoperability. However, it could also expose vulnerabilities to security breaches, data leaks, and other threats. In this session we highlight the need for ongoing dialogue and collaboration among telcos and developers to ensure that open network innovation is effective, safe, and meet the needs of the users. We will explore the challenges and opportunities of this technology and ask exactly how open we need to be.