After being told by people again and again I should use Dropbox, the truth of it finally emerges!
Dropbox, which has more than 25 million users, revised its website claims about its data security April 13, from:
All files stored on Dropbox servers are encrypted (AES256) and are inaccessible without your account password.
All files stored on Dropbox servers are encrypted (AES 256).
All of you who put your trust in that service have been betrayed.
Every Cloud service will betray you the same damn way.