If you DDoS all of a hidden services introduction nodes NOBODY who doesn't already have an established connection can access the hidden service. Introduction node DDoS was definitely my first thought because it is quite trivial to exhaust their processing abilities. However, as Astor pointed out in another thread, people who do manage to get established connections to the marketplace are also experiencing slow loading times. That would not be a likely effect of introduction point DDoSing , which would simply make it impossible for new people to establish any connection to the site in the first place. However, there are many other ways to DDoS a hidden service, as I have mentioned multiple times now so will not repeat again. You are clearly very ignorant of how Tor works and the basics of cyber security.