Chema Alonso is the CDO - Chief Data Officer - at Telefónica. In this position he heads the company’s Big Data strategy, Advertising and the Fourth Platform. As part of the work to define the Fourth Platform, he also leads the Personal Data Bank team and is the main internal promoter of the Data Transparency Lab. He is also responsible for global cybersecurity and data security, having created the new Global Security Unit with the Information Security Global Business in B2B & B2C and Eleven Paths.