Dark data is the information your company collects but never uses—often 55% or...

https://nova-wiki.win/index.php/We_Pay_for_300TB_and_3.5PB_in_Cloud_Storage_%E2%80%93_How_Much_Is_Junk%3F

Dark data is the information your company collects but never uses—often 55% or more of stored data. It creates hidden risks like increased ransomware exposure and drives up storage and backup costs, wasting millions yearly