Dark data is the information companies collect but never use, often making up...

https://station-wiki.win/index.php/What_Does_%22Agentless%22_Really_Mean_for_Storage_Analytics_Tools%3F

Dark data is the information companies collect but never use, often making up 60-80% of all stored data. This unused data takes up space, slows systems, and can cost businesses millions yearly in storage and management