Dark data is the information companies collect but never use. It often makes up...

https://www.bookmarkmaster.win/dark-data-is-the-inactive-or-unused-information-stored-across-your

Dark data is the information companies collect but never use. It often makes up 60-80% of all stored data, sitting untouched and costing organizations money. This inactive data can waste up to $2.5 million a year in storage and management expenses