Dark data is all the information your team stores but rarely uses—up to 80% of...

https://wiki-legion.win/index.php/How_Do_I_Keep_Drafts_and_Duplicates_Out_of_a_Vector_Database%3F

Dark data is all the information your team stores but rarely uses—up to 80% of it can sit inactive. This hidden data drives up storage costs, creates security risks, and clutters AI projects with useless noise