Rui Bruno Santos is a PhD candidate in Communication Sciences at the ISCTE – University Institute of Lisbon, where he investigates how communication can help prevent tax non-compliance. He holds an MSc in Management (2012) and a BA in Marketing and Communication (2010) from Universidade Atlântica, Portugal. His research explores the role of communication with social norms and taxation, in particular, their influence on tax compliance and reactions of citizens to tax policy through digital communications. Since 2023, he has been developing methods for analysing social media data by combining R, Python, and advanced content analytics tools. That same year, he joined the Portuguese team on the European Commission project “Strengthening Tax Compliance by Implementing Behavioural Insights for Revenue Administrations in Member States”.