Dark data is the info companies collect but don't use—about 55% of it just sits...

https://oscar-wiki.win/index.php/Dark_Data_in_Object_Storage:_How_Do_I_Search_It_Like_Google%3F

Dark data is the info companies collect but don't use—about 55% of it just sits there. This inactive data not only wastes money (think millions) but also creates risks and clutters AI projects with noise