https://www.vice.com/en_us/article/93b9nv/internet-service-providers-collect-sell-horrifying-amount-of-sensitive-data-government-study-concludes

Over the last few years the justified fixation on the bad behavior of Google, Amazon, Facebook and other Silicon Valley giants has let the abuses of the telecom sector fly under the radar. But a new FTC report showcases how when it comes to consumer privacy, broadband providers are every bit as terrible as you thought they were.

The new FTC report studied the privacy practices of six unnamed broadband ISPs and their advertising arms, and found that the companies routinely collect an ocean of consumer location, browsing, and behavioral data. They then share this data with dodgy middlemen via elaborate business arrangements that often aren’t adequately disclosed to broadband consumers.