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

https://landensbrilliantperspectives.capitaljays.com/posts/how-can-dark-data-raise-ai-token-costs

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