Dark data is the information companies collect but never use—think of old...

https://brookssniceop-ed.bearsfanteamshop.com/is-dark-data-the-same-thing-as-unstructured-data

Dark data is the information companies collect but never use—think of old files, logs, or emails just sitting around. It can make up 60-80% of all inactive data, taking up space and costing businesses an average of $2.5 million every year