I wonder how the various online backup services would handle a request to delete the backup.
In a ransom-ware situation, the bad guys might have the keys to a backup service. The existence of that backup would make it pointless to actually pay the random so they have a motivation to do what they can to delete the backups.
I would have no problem opting-in to a provision where they will not delete backups for (say) a year, no matter what.
"Delete my backups now! I pay you and I demand you obey my request!"
"No."
The correct solution is having an "append only" and a "full control" key for the same account. Keep your full control key on paper in your safe/drawer, almost never use it on your computer. Use your "append only" key almost always, if it gets stolen by ransomware, they can't prune your online backups.
In a ransom-ware situation, the bad guys might have the keys to a backup service. The existence of that backup would make it pointless to actually pay the random so they have a motivation to do what they can to delete the backups.
I would have no problem opting-in to a provision where they will not delete backups for (say) a year, no matter what.