The “CLOUD & DATA SECURITY” workshop was held on 16 October. The event is part of the Aerospace@Industry4.0 programme, developed by the Lombardia Aerospace Cluster in collaboration with the Politecnico di Milano and Google Cloud for its members, with the aim of exploring the topics of Big Data Analytics and Machine Learning/Artificial Intelligence; tools that enable scenarios for production process optimisation, predictive maintenance, and efficiency. The focus was on the technological solutions and management processes that ensure the privacy, security, and integrity of customer information.