The New York Times –  Little-known companies are amassing your data — like food orders and Airbnb messages — and selling the analysis to clients. Here’s how to get a copy of what they have on you.

“…As of this summer, though, Sift does have a file on you, which it can produce upon request. I got mine, and I found it shocking: More than 400 pages long, it contained all the messages I’d ever sent to hosts on Airbnb; years of Yelp delivery orders; a log of every time I’d opened the Coinbase app on my iPhone. Many entries included detailed information about the device I used to do these things, including my IP address at the time. Sift knew, for example, that I’d used my iPhone to order chicken tikka masala, vegetable samosas and garlic naan on a Saturday night in April three years ago. It knew I used my Apple laptop to sign into Coinbase in January 2017 to change my password. Sift knew about a nightmare Thanksgiving I had in California’s wine country, as captured in my messages to the Airbnb host of a rental called “Cloud 9.”…”