What's the price of getting your data? More data

The new year ushered in a landmark California privacy law that gives residents more control over how their digital data is used. The Golden State isn’t the only beneficiary, though, because many companies are extending the protections — the most important being the right to see and delete the personal data a company has — to all their customers in the United States.

In the fall, I took the right of access for a test drive, asking companies in the business of profiling and scoring consumers for their files on me. One of the companies, Sift, which assesses a user’s trustworthiness, sent me a 400-page file that contained years’ worth of my Airbnb messages, Yelp orders and Coinbase activity. Soon after my article was published, Sift was deluged with over 16,000 requests, forcing it to hire a vendor to deal with the crush.