Module 6: Payments & Digital Transactions.

This module wasn't just about data; it was about the infrastructure of FinTech. I learned how money actually moves (The Issuer vs. Acquirer vs. Network).

My Assignment: I built a Power BI dashboard to automatically catch 3 types of fraud in a dataset:

Bots: I wrote code to spot users swiping their cards 3 times in 1 minute (Velocity Fraud).
Whales: I flagged a user spending 14,000 AED when they usually spend 50.
Risky Business: I blocked transactions at gambling sites like "Bet365."

Big Lesson: Fraud detection is basically just defining what "Normal" looks like, and writing a formula to scream when that pattern breaks.

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