the case is driven by austrian activist max schrems, behind me here, who first took on facebook overcy as a young law student, eight years ago. in 2015, he successfully challenged the eu's old system of safeguarding its citizens‘ data when it was transferred to the us, arguing it wasn't good enough. well, if the court agrees that the eu's latest system isn't up to scratch, then thousands of companies — from tech firms to banks to carmakers and charities — would have to stop exporting eu citizens‘ data. under new general data protection regulations — gdpr — they could be fined up to 4% of global revenue if they don't. well, professor suzanne rab, of serle court, is a barrister who specialises in eu law, and shejoins me now. welcome. tell is in your view has significant this cases. this case is significant. it is an issue which goes beyond the particular dispute and relates to the mechanisms that businesses in the eu used to tra nsfer businesses in the eu used to transfer data outside of the european union. 50 transfer data outside of the european union. so potentially, very wide ramif