Dark data is the hidden information companies store but don’t use—like old...

https://www.fastbookmarks.win/dark-data-is-the-info-companies-collect-but-don-t-use-think-55-of-data-just

Dark data is the hidden information companies store but don’t use—like old files or unused emails. It can make up 55% of all data, costing millions in storage and creating security risks