It's likely about to be a very bad day for three medical facilities and 655,000 patients whose information has been put up for sale on the TheRealDeal market, a marketplace, located on TOR, that specializes in selling numerous illegal items.
In an interview from 2015 with the market's admin, "...basically we consist of 4 partners who have a lot of experience in infosec...We decided it would be much better if there was a place where people can trade such pieces of information and code combined with a system that will prevent fraud and also provide high anonymity." Fantastic! We certainly wouldn't want those in the business of perpetrating fraud on others to be defrauded themselves... (Yes, that's sarcasm.) Included in the list of items for sale are a variety of exploits (both known and unknown / not yet patched), databases (like the ones TheDarkOverlord is selling), code, drugs, hardware including physical hacking tools, and specialty services offered by hackers (such as paying for a hacker to access a specific email account or acquisition of a specific document - think corporate espionage).