Microsoft CEO Satya Nadella at a company event in New York in May 2017. Source: Jason DeCrow, AP Images | Microsoft

I've written detailed guides on what Amazon, Google, Twitter and Facebook know about us and, when possible, how to download that data. For some reason I didn't really think Microsoft knew a lot about me. I was wrong — it does know a pretty decent amount. Here's a look at some of the data that I found Microsoft has: It knows where I am right now.

It knows what apps I opened on my Windows 10 computer, down to the exact day I opened them.

It has all my search data from its Edge browser.