Dark data is the inactive information companies keep but don’t use—around...

https://www.adirs-bookmarks.win/dark-data-is-the-unused-information-stored-in-your-systems-often-making-up-55

Dark data is the inactive information companies keep but don’t use—around 60-80% of stored data goes untouched. This unused data increases storage and backup costs and leaves businesses exposed to risks like ransomware attacks