Dark data is the information companies collect but never use. It can be...

https://alpha-wiki.win/index.php/What_are_Transparent_File_Tables_and_How_Do_They_Help_with_Lakehouses%3F

Dark data is the information companies collect but never use. It can be anything from old emails to outdated files. Studies show 60-80% of data stored is inactive, quietly taking up space and costing businesses millions annually