These firms build their profiles over a period of years, gathering data from government and public records, consumer contests, warranties and surveys, and private commercial sources — like ...

collecting information from many sources to create detailed profiles of voters with thousands of data points and build models that predict people’s stances on issues or candidates. Political ...

to acquire data points like home address and phone number. People-search or white pages websites are data brokers that scrape these records, extract the data, and post it online for search and sale.

This point is significant both for everyone ... and Sergey Brin are all visible in the sample data, including “Profile ID,” “Account ID,” name, sex, birth year, current location, and ...