Access data minimization is not just a better practice. It’s survival. Every excess permission, every unused field, every over-broad query is a liability waiting to be exploited. The fastest systems are lean. The safest systems are precise. The cleanest systems know the shape of the data they truly need.
Most breaches hide in plain sight. They live where access policies sprawl instead of focus. Where an engineer once opened up full-table reads for a quick fix, and no one closed it back down. Where APIs send entire objects instead of the single element the function actually uses. These are the access vulnerabilities that grow over time.
Data minimization starts with visibility. You cannot restrict what you can’t map. Identify where data flows, which services consume it, and which users or roles have rights. Then apply principle-of-least-privilege without exceptions. Not just for external requests, but also internal service-to-service calls. Code and systems should demand the smallest scope possible—on purpose, by design, and enforced automatically.