Is it a backup at all?
"Many customers, especially small customers, were not really very interested in that and they believed 'because it's in the cloud... my backups are secured.'"
It's not a backup unless:
[1] you control the backup schedule and parameters
[2] you've tested it and proved you can re-install without error
[3] you know where it's stored and have verified that storage is secure against foreseeable hazards
Otherwise it's just an untrusted temporary copy hanging about somewhere. The fantasy that you can forget about security once you migrate your data to the 'cloud' is just that - a fantasy. If you're not in control, you haven't any control, and if you haven't any control you'll lose your data some day.