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

https://deansinspiringperspective.hexaforgey.com/posts/how-do-i-find-duplicate-files-across-nas-and-object-storage

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