Dark data is all the untapped information your company collects but never uses....

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

Dark data is all the untapped information your company collects but never uses. It can be 60-80% of your stored data just sitting there, quietly eating up space and resources. Ignoring this data costs businesses an average of $2