Dark data is the information your organization collects but never uses—often...

https://garrettwigp625.tearosediner.net/bluexp-now-netapp-console-does-it-change-data-management

Dark data is the information your organization collects but never uses—often making up 55% of stored data. This unused data not only wastes money on storage and backup but also increases risk by providing potential entry points for ransomware attacks