Dark data is all the information companies collect but never use—think 60-80%...

https://www.alphabookmarks.win/dark-data-is-the-info-companies-collect-but-never-use-it-can-be-60-80-of

Dark data is all the information companies collect but never use—think 60-80% of stored data sitting idle. It matters because this forgotten data takes up space, drives up costs, and can hide risks. For example, businesses waste around $2