Dark data is the information companies store but never use—like old files or...

https://nova-wiki.win/index.php/Is_It_True_That_Unused_Enterprise_Data_Grows_at_20%25_CAGR_Through_2027%3F

Dark data is the information companies store but never use—like old files or unorganized backups. It can make up 55% of all data, leading to wasted storage costs and security risks