We all kind of know this is true, but it’s always really eyeopening to see to what extent these companies know everything about us.<p>Even worse is, I think, that somehow they are allowed to sell all the data and that you can basically buy data about everybody easily online[1]<p>[1]: <a href="https://media.ccc.de/v/38c3-databroker-files-wie-uns-apps-und-datenhndler-der-massenberwachung-ausliefern" rel="nofollow">https://media.ccc.de/v/38c3-databroker-files-wie-uns-apps-un...</a>