I currently use Dropbox as an online backup to protect my important files (work related, save files, some hobby projects) against data loss, including ransomware, hardware loss, theft,...
However, I'm wondering whether this might actually cause more issues in some situations. Suppose I get infected by ransomware. Not much lost, I just reinstall Windows and rollback my Dropbox to before I got infected (maybe through an account rollback ticket). However, could the ransomware somehow manage to hide itself in my Dropbox folder and reinfect my machine after the rollback, or worse, other machines that sync using Dropbox?
Example: I got my resumé in my dropbox. Can ransomware alter this word file so it can reinfect me? And would this alteration survive a Dropbox rollback to a point before I got infected?