Dark data is the information your company collects but never uses, often making...

https://wiki-byte.win/index.php/Warm_Cutover_vs_Big_Bang_Migration:_Which_Is_Less_Risky_for_Your_Data_Migration_Plan%3F

Dark data is the information your company collects but never uses, often making up 55% of stored data. This unused data not only wastes money on storage and backup but also raises risks like ransomware attacks and data breaches