Reading the Receipts: How Smarter Privacy Accounting Could Unlock More from Sensitive Data

The Problem Hiding Inside Every Medical Study Picture a coalition of hospitals that wants to train an AI to detect early signs of heart disease. No individual hospital has enough patients to train the model alone, so they decide to collaborate. But there's a catch: they cannot simply share patient records. Privacy law forbids it. So instead, each hospital trains on its own data and shares only the model's learned parameters - not the raw records themselves. This arrangement sounds safe, but the parameters are not innocent.