Dark data is the untouched information stored in your systems—up to 55% of all...

https://titussexcellentnews.nexorafield.com/posts/why-keeping-dark-data-on-flash-waste-budget

Dark data is the untouched information stored in your systems—up to 55% of all data goes unused. This matters because it racks up costs and creates risk, especially when AI sifts through cluttered files