The post-crisis focus on ensuring systems are separated by internal risk ‘buffers’ is being questioned, as distributed ledger technology promises to bring benefits to banks, regulators and businesses. But can anything interconnected also be safe? Dixit Joshi investigates.
The Basel Accords oblige banks to use two methods to measure and limit risk – value at risk and expected shortfall – but research shows these are insufficient to curtail the behaviour of rogue traders. Damiano Brigo and John Armstrong suggest a different approach.