Joseph Cox, reporting for the Daily Beast: The dark web -- a pack of websites that hides their physical location with special software -- is always a precarious place, with the FBI shutting down massive criminal networks, or competing sites hacking one another. Now, someone is trying to take the four largest drug marketplaces offline, seemingly by flooding them with a torrent of traffic. These sites offer a mail-order service for pretty much any drug a customer could imagine, from LSD to varieties of heroin. As of at least Friday morning, several marketplaces were inaccessible or could only be visited from backup website addresses, and at the time of publication are still facing problems. It's not totally clear who is behind the outages, but the downtime has disrupted the dark-web community somewhat. "We are facing a DDoS attack atm [at the moment] and I guess many other markets as well," a Reddit moderator for the site dubbed Wall Street, one of the affected marketplaces, told The Daily Beast.