Dark data refers to the inactive or unused information stored in your files and...

https://astro-wiki.win/index.php/What_Did_Gartner_Say_About_Agentic_AI_Storage_in_May_2026%3F

Dark data refers to the inactive or unused information stored in your files and systems. Around 55% of data falls into this category, which not only adds unnecessary storage costs but also creates risks like security gaps