Dark data is the info companies collect but never use—often 60-80% of all...

https://www.bookmark-belt.win/dark-data-is-the-information-your-business-collects-but-never-uses-with-55-of

Dark data is the info companies collect but never use—often 60-80% of all stored data. It takes up space, slows systems, and can cost businesses $2.5 million a year in unnecessary storage and management