Pretty damn easy if you know where to look. Data brokers sell your location, browsing habits, purchase history legally. The illegal stuff? Even easier - one breach and millions of records hit the dark web for pennies.

Most valuable? Financial data, medical records, and anything with full identity packages. But honestly, the scariest valuable data is behavioral prediction models. Knowing exactly how to manipulate someone's decisions is worth more than their credit card number.

Your phone probably leaked more about you today than a 1990s PI could gather in months of stalking. We're all walking data goldmines and most people have no clue how naked they really are.