The dramatic revelation of a massive and expensive data breach has blindsided Westminster. It's the first time that a superinjunction, which stops media reporting, has been used by the government. We talk to Sean Humber, from law firm Leigh Day, who specialises in privacy breach compensation claims and is organising a class action in the case. We ask if the government is getting worse at handling data, and how much it might eventually cost. Hosted by Caroline Hepker and Yuan Potts.

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