KYC with no data vs. KYC with too much data

I have worked on KYC and AML from two opposite ends. A few years ago, I helped build a digital bank from scratch. It had no branches, no history and no customers, so everyone who signed up was a stranger. Today, I work on KYC for a large, established bank, and the situation is reversed. The bank has years of transaction history for its clients, data from public registries, and AI agents that search the web for news about them. It is the same acronym, but the engineering work has very…