https://www.cnet.com/news/apples-tim-cook-calls-for-new-regulations-to-protect-your-personal-data/

"For example, you might have bought a product from an online retailer -- something most of us have done," he wrote.

"But what the retailer doesn't tell you is that it then turned around and sold or transferred information about your purchase to a 'data broker' -- a company that exists purely to collect your information, package it and sell it to yet another buyer."