Dark data is all the info your business collects but never uses. Studies show...

https://astro-wiki.win/index.php/What_is_the_Difference_Between_Archiving_and_Dark_Data_Hoarding%3F

Dark data is all the info your business collects but never uses. Studies show that 60-80% of data sits inactive, taking up space and costing money. This unused data can hide risks like compliance issues or security threats