Dark data is the information companies collect but don’t use, like old files or...

https://wiki-square.win/index.php/What_is_KAPPA_Data_Services_and_What_Can_It_Extract%3F

Dark data is the information companies collect but don’t use, like old files or inactive emails. Around 60-80% of stored data sits idle, taking up space and costing businesses up to $2.5 million a year in unnecessary storage and management fees