Your Financial Data Should Never Leave Your Machine — Here's How I Built 5 AI Tools That Prove It

Every day, millions of people paste their bank statements into ChatGPT. They upload invoices to cloud AI services. They feed their tax documents into web apps that promise "AI-powered analysis." And every single one of them is handing their most sensitive data — income, spending habits, debt, investments — to a third-party server they don't control. I'm a Senior Software Engineer at Microsoft, working on Copilot Search Infrastructure (semantic indexing, RAG pipelines). I build AI systems for a...