Dark data is all the information your company collects but never uses—think old...

https://astro-wiki.win/index.php/What_is_the_Difference_Between_Archiving_and_Dark_Data_Hoarding%3F

Dark data is all the information your company collects but never uses—think old files, logs, or unused documents. It can make up 60-80% of your stored data, creating extra costs and security risks. Ignoring it means wasting up to $2