Palantir is just one example of a new breed of companies whose business is our data. And alongside the analysts, there are also the data brokers: companies who buy and collect people’s personal information and then resell it or share it for profit. Acxiom, Corelogic, Datalogix, eBureau – a swathe of huge companies you’ve probably never directly interacted with, that are none the less continually monitoring and analysing your behaviour.