Dark data is all the information companies collect but never use—think 60-80%...

https://shed-wiki.win/index.php/What_Does_%22Garbage_In,_Garbage_Out%22_Look_Like_in_Vector_Databases%3F

Dark data is all the information companies collect but never use—think 60-80% of stored data sitting idle. It matters because this forgotten data takes up space, drives up costs, and can hide risks. For example, businesses waste around $2