Dark data is the inactive or unused info lurking in your systems — often 60% to...

https://felixssuperperspective.brightsora.com/posts/how-do-i-build-a-dark-data-cleanup-plan-that-legal-will-approve-2

Dark data is the inactive or unused info lurking in your systems — often 60% to 80% of it. It’s not just wasting storage and money but also creating risk and clutter that can confuse AI projects