Anni Hellman – the Deputy Head of Unit at the EU Commission Directorate-General for Communications Networks, Content and Technology – was a BIDS Visiting Fellow and an EU Fellow in the Berkeley Institute of European Studies at University of California, Berkeley, in 2021-2022. She is a mathematician, qualified insurance actuary and a Fellow of the Actuarial Association of Finland, and holds degrees in mathematics, actuarial sciences and computer sciences. In the European Commission, her unit (Media convergence and social media) has focused on the challenges of social media, with two main strands or work: policy on how to tackle the challenges of disinformation, and how to work towards ensuring the integrity of social media through a multidisciplinary approach and through funding of research projects. In Berkeley, Hellman has returned partly to her mathematical roots to look into the challenges of artificial intelligence in general and algorithms in particular – can AI be audited? – as well as the disinformation challenge from a mathematical perspective. Hellman aims to combine her backgrounds in pure and actuarial mathematics, in audit practices and in working on and with the European legislative instruments.