Building on the first publication “Sharing is Caring: Four Key Requirements for Sustainable Private Data Sharing and Use for Public Good”, this paper (also developed in partnership with the Vodafone Institute for Society and Communications) looks at how digital technologies and data have been applied to fight the Coronavirus. It summarizes the main debates and questions around these initiatives and reflects on their usefulness, implications, limitations, risks and requirements to fight COVID-19 and “build back better”, fairer, and more sustainable human systems.