But first we turn to the trading data its big business and as so often says to me street the head of its time. Journal like. Ones and big data of how its much of the internet so how does it all work. German student Jessica Webers spends a lot of time online but would prefer to remain anonymous shes installed an ad blocker and also cleans out her browser data on a regular basis. For that was that i try to be careful and to reveal a minimum of information about myself for the settings to protect my data as far as possible while surfing. But will that prevent companies from collecting head data and composing an individual behavior profile. Is less. Concerned about his online data the growth amala born marketing student has installed twenty apps on his smartphone he uses eleven of them regularly including apps that belong to facebook and google. As an advantage for Google Facebook doubt my data and then provide me with a recommendation. We accompany the two of them through a typical digita