Dark data is the information companies collect but never use—think emails,...

https://wool-wiki.win/index.php/How_Do_I_Stop_AI_Ingestion_from_Pulling_in_Junk_Files%3F

Dark data is the information companies collect but never use—think emails, logs, old files sitting idle. It can make up 55% of stored data, costing millions in storage and creating risks like security gaps