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

https://jaspersmasterinsights.opalvector.com/posts/what-is-kappa-data-services-and-what-does-it-actually-do

Dark data is the information your company collects but never uses—like old files hiding on servers. Around 55% of stored data is dark, which means you’re paying to keep it safe but getting no value