I've purchased used laptops that weren't wiped, and found fairly elaborate tax documents and other identifiable info on there that I could easily have abused.
I'm not a douchebag, so I just wiped the disk and didn't do anything with it, but I suspect that there must be an entire industry of people buying used computers or hard drives on Ebay and stealing data off there.
I just want to definitively confirm that such an industry exists. For some time, there were people buying used phones, recovering sexts, and extorting the sellers (whose name, email, phone, and address they now had courtesy of eBay).
I'm not a douchebag, so I just wiped the disk and didn't do anything with it, but I suspect that there must be an entire industry of people buying used computers or hard drives on Ebay and stealing data off there.