Dark data is the inactive or hidden information lurking in your storage—often...

https://trentonsexcellentthoughtss.evergrovio.com/posts/why-is-dark-data-a-compliance-problem-even-if-nobody-opens-it

Dark data is the inactive or hidden information lurking in your storage—often 55% of what companies keep. It’s not just taking up space; it’s costing you money and creating noise that confuses AI projects