My Microsoft email address and account are linked to Skype, OneDrive and Windows 10 (products I use by Microsoft).
This account is not linked to my phone (Android).
I don't use this account for Email (I use Gmail for email).
Absolutely sure I don't have private data/conversations in OneDrive.
Today I have looked at my "Junk Email" on my Microsoft email account.
I have a number of spam emails about "tinnitus", "tired of that ringing in your ears", "the sound from inside your head".
And emails about "home security equipment", "loan", "keep your home safe", "never pay for covered home repairs".
I had conversations about these 2 subjects recently on Skype (in the past months).
I don't use Bing or Cortana to search about these subjects. I always use Google on Google Chrome to search.
This makes me very worried, as this makes it very suspicious that my Skype chats are being shared with 3rd party or similar.
I really can't think of another way these spammers would know that I have interest for "tinnitus".
Any ideas or explanations?