The Commercial Court will hear a challenge brought on behalf of Irish consumers aimed at restraining Microsoft’s allegedly “large-scale” unlawful use of personal data in its advertising auctions. The Irish Council for Civil Liberties (ICCL), a non-governmental human rights organisation, is suing the Irish arm of the tech giant, Microsoft Ireland Operations Ltd, over alleged data infringements by its advertising platform Xandr. The platform allows Microsoft to sell advertising slots in real time to advertisers (known as real-time bidding auctions), generating revenue of a “very significant magnitude”, James Doherty, senior counsel for the ICCL, told the court. The challenge is…

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