Dark data is the information organizations collect but don’t use, making up 55%...

https://hotel-wiki.win/index.php/Is_It_True_55_Percent_of_Enterprise_Data_Is_Dark%3F_Exploring_Dark_Data_Statistics_in_2025

Dark data is the information organizations collect but don’t use, making up 55% of stored data on average. This unused data increases storage and backup costs and raises the risk of ransomware or data breaches