You could still encrypt all the stored data in the cloud and delete everything that is unencrypted.
Since most of the historical data that customers upload is in the Garmin cloud, not on their local devices (I believe the local device only stores a small period of recent activity), this potentially means a lot of lost data for customers.
I would also imagine things like accounts and their relations to hardware devices (which account is associated with which device) is stored in the cloud somewhere, so those associations alone are important for synchronizing data to the cloud.
This will be a mess to cleanup if true, if they don't have some kind of separate off-site backups outside of this compromise.
Since most of the historical data that customers upload is in the Garmin cloud, not on their local devices (I believe the local device only stores a small period of recent activity), this potentially means a lot of lost data for customers.
I would also imagine things like accounts and their relations to hardware devices (which account is associated with which device) is stored in the cloud somewhere, so those associations alone are important for synchronizing data to the cloud.
This will be a mess to cleanup if true, if they don't have some kind of separate off-site backups outside of this compromise.