https://www.ibm.com/docs/en/db2/11.5.x?topic=creation-creating-encrypted-backup-images
Create an encrypted backup image of your database using the BACKUP DATABASE command and specifying which library you would like to use in backup operations.
encrypted backupcreatingimages
https://www.ontrack.com/en-au/case-studies/rescued-ms-sql-database-encrypted-virtual-backup-qnap
Ontrack successfully recovered a damaged VM with a critical Microsoft SQL database from a ransomware cyberattack that encrypted a virtual backup running on...
ms sqlrescueddatabaseencryptedvirtual