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

https://emilioezho292.theglensecret.com/what-is-transparent-move-technology-and-does-it-break-file-access

Dark data is all the information companies collect but never use—between 60-80% of stored data often sits inactive. This unused data adds clutter, increases storage costs, and can hide risks like compliance issues