I've noticed recently that I'll get a weekly e-mail from Microsoft showing my "week in review", with inline copies of photos I took with my phone and uploaded to OneDrive (I have 1TB of space with OneDrive thanks to an O365 account). This just started a few weeks ago.
So, Microsoft is not only rifling through the contents of my OneDrive camera roll, they are then transmitting the photos to my email unencrypted, without ever asking me to opt in to this service. I used to praise Microsoft for being opt-in as opposed to Google's opt-out; I guess that's all out the window now (no pun intended).
I guess it's finally time to flip the switch on the OwnCloud account I've been testing and drop OneDrive.