Dark data is the information your company collects but never uses—often 55% of...

https://www.slideserve.com/aaron_ward92/why-does-dark-data-create-operational-drag-for-it-teams

Dark data is the information your company collects but never uses—often 55% of all stored data. Holding onto this inactive data increases storage and backup costs and raises your risk of ransomware or breaches