Dark data is the inactive or unused information your business stores but...

https://www.bokkmarking-signs.win/dark-data-is-the-inactive-or-unused-information-stored-but-not-analyzed-often

Dark data is the inactive or unused information your business stores but doesn’t analyze. It can make up 55% of your data and often hides risks like ransomware exposure. Plus, storing and backing up this data wastes money—sometimes over $2