Dark data is the information your business collects but never uses—often making...

https://aged-wiki.win/index.php/What_Does_It_Mean_to_Curate_Data_for_AI_Ingestion%3F

Dark data is the information your business collects but never uses—often making up 55% of stored files. This inactive data not only wastes storage and backup resources but also increases breach and ransomware risks