A few weeks ago, there was a larger tech conference here in Germany where one of the topics presented was basically: Did you guys know that you can just buy data, or even get a free sample of it, which allows you to identify people that work in government agencies, important military bases and so on, and then you can also find out where they live, where their kids go to school, whether they visit therapy or a brothel, or loads of other things you could use to blackmail them?
All of that information, you can derive from location data which gets tied together by the advertising ID built into mobile phones.
Reading this news now just makes it sound like Google saw that talk and what they took away from it, is that their advertising IDs are really useful and they should do even more of that. ๐ซ
Here's the video with English dub, in case anyone's interested: https://media.ccc.de/v/38c3-databroker-files-wie-uns-apps-und-datenhndler-der-massenberwachung-ausliefern#l=eng