Dark data is the information your company keeps but doesn’t use—often 55% of...

https://www.phone-bookmarks.win/dark-data-is-the-inactive-or-unused-data-stored-across-your-systems-often

Dark data is the information your company keeps but doesn’t use—often 55% of stored data is dark. This unused data takes up space, driving up storage and backup costs, and it can increase your risk of breaches or ransomware attacks