To the uninitiated, it looks like a clerical error, a redundant piece of code. DCIM , after all, stands for Digital Camera Images, the universal standard folder where our phones store the faces of our friends, our pets, our receipts, and our sunsets. But the prefix private changes the texture of the space entirely. It is a locked drawer inside an already open desk.
What or web server (Apache, Nginx, cloud storage) you are using? How you currently transfer or back up your photos?