The workshop will host two keynotes by a major insurance company (AXA), and several academic and industrial talks. The objective is to create an interface between academics and practitioners, to exchange and create synergies about challenging problems at the crossing of machine learning on social media and industrial applications that involve risk assessment and management. This topic is particularly relevant and unexplored. The exploitation of such sources of information for risk-based businesses is a relatively recent topic. It requires new developments both on the methodological and technological aspects: from new statistical models that describe accurately the dynamics of social media and information diffusion, to the use of APIs and relevant databases to crawl, structure and exploit data from social media. Needless to stress that the dominant structures in this case are the graphs enriched with the textual content of user interactions and histories.