Dark data is the info companies store but never use—think of old files or...

https://connersinterestingblog.theglensecret.com/how-do-i-keep-unknown-departmental-shares-from-becoming-dark-data-again

Dark data is the info companies store but never use—think of old files or unused backups. It can be up to 55% of all stored data, quietly costing millions and creating risks like security gaps