Dark data is the information stored but rarely used, often making up 55% of a...

https://www.normalbookmarks.win/dark-data-is-hidden-information-your-company-keeps-but-rarely-uses-about-55-of

Dark data is the information stored but rarely used, often making up 55% of a company’s data. It quietly racks up storage costs, creates security risks, and clutters AI projects with unnecessary noise