Dark data is the hidden information companies store but never use. It makes up...

https://online-wiki.win/index.php/How_Do_You_Find_Data_Owners_for_Old_Departmental_Shares%3F

Dark data is the hidden information companies store but never use. It makes up 60-80% of all data, quietly eating up storage space and slowing systems. Ignoring it can cost businesses up to $2.5 million each year in wasted resources