Dark data is all the information your company collects but never uses—often 55%...

https://spark-wiki.win/index.php/How_Do_I_Connect_NAS_and_Object_Stores_Without_Installing_Agents%3F

Dark data is all the information your company collects but never uses—often 55% of it just sits inactive. This hidden data can cost you big, lead to security risks, and clog AI systems with noise