It’s interesting to see how much data you can dig up about a person given a name and certain details to correlate the results. Add correlated data, tie it together and you can build a pretty good picture about someone.
I’ve done it myself, and a quick search for my own turns up some very interesting results. Results that I hope would-be investigators brush off.
But it’s naive to think about bits of information that way. In the age of the panopticon and internet, finding something out about a person or thing usually easy now.
Once on the internet, always on the internet.