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Hosting firm says it lost all customer data after ransomware attack
(www.bleepingcomputer.com)
This is a most excellent place for technology news and articles.
Or something like AWS S3 vault lock. You pay up front and specify the duration. And at that point you can't even delete the data if you want to. You can remove you're credit card from account billing, and they still keep the data for the specified duration.
Pretty sure the Amazon vault lock offerings are essentially specific implementations of the broad idea of an immutable backup. Not disagreeing with you here, just saying this might not be an “or” situation.