Dark data is the information companies collect but never use, like old files or...

https://jasperssuperbcolumn.trexgame.net/why-do-ai-agents-get-worse-when-they-search-old-folders

Dark data is the information companies collect but never use, like old files or logs gathering dust. It can make up 60 to 80% of all stored data, quietly costing businesses millions each year in storage and management