Dark data is info your company stores but rarely uses—around 55% of all data...

https://high-wiki.win/index.php/How_Do_I_Estimate_the_Cost_of_Dark_Data_Storage%3F

Dark data is info your company stores but rarely uses—around 55% of all data sits idle. It still costs money to keep and poses security risks. Plus, when AI tools pull from this junk, they create noise that muddies results