Dark data is the inactive or unused information stored but not analyzed, making...

https://www.seo-bookmarks.win/dark-data-is-the-inactive-or-unused-data-stored-but-never-analyzed-around-55

Dark data is the inactive or unused information stored but not analyzed, making up about 55% of enterprise data. It increases breach risks like ransomware attacks and drives up storage and backup costs, sometimes wasting millions annually