There was a nice talk on the recent Chaos Communication Congress (from Chaos Computer Club): https://media.ccc.de/v/38c3-databroker-files-wie-uns-apps-und-date

There was a nice talk on the recent Chaos Communication Congress (from Chaos Computer Club): https://media.ccc.de/v/38c3-databroker-files-wie-uns-apps-und-datenhndler-der-massenberwachung-ausliefern https://media.ccc.de/v/38c3-databroker-files-wie-uns-apps-un... (English audio available)