An anonymous reader writes: Have Carnegie Mellon University researchers been paid by the FBI to unmask a subset of Tor users so that the agents could discover who operated Silk Road 2.0 and other criminal suspects on the dark web? Tor Project Director Roger Dingledine believes so, and says that they were told by sources in the information security community that the FBI paid at least $1 million for the service. From the article: "There is no indication yet that they had a warrant or any institutional oversight by Carnegie Mellon's Institutional Review Board. We think it's unlikely they could have gotten a valid warrant for CMU's attack as conducted, since it was not narrowly tailored to target criminals or criminal activity, but instead appears to have indiscriminately targeted many users at once," noted Dingledine. "Such action is a violation of our trust and basic guidelines for ethical research. We strongly support independent research on our software and network, but this attack crosses the crucial line between research and endangering innocent users," he pointed out.