We've encountered an issue on the Mac where Adobe Creative Cloud (version 18.104.22.168) appears to be removing the contents of the first hidden folder at the root of the drive, in alphabetic order. By happenstance, the first hidden folder on most Backblaze customer's internal drive is the .bzvol folder. You can learn more about this folder and what it does in this article:
Here are two videos to demonstrate the issue:
Edited by NickAu, 12 February 2016 - 10:23 PM.