Dark data is the information companies collect but never use, often making up...

https://www.save-bookmarks.win/dark-data-is-the-inactive-info-your-company-stores-but-doesn-t-use-often-60-80

Dark data is the information companies collect but never use, often making up 55% of stored data. This unused data not only wastes storage and backup costs but also increases risks like ransomware exposure