"On or about October 7, 2013, the HSI-UC [the undercover agent] was invited to join a newly created discussion forum on the Tor network, concerning the potential creation of a replacement for the Silk Road 1.0 website. The next day, on or about October 8, 2013, the persons operating the forum gave the HSI-UC moderator privileges, enabling the HSI-UC to access areas of the forum available only to forum staff."
They were compromised from day 1, before the 2.0 site had even launched. I wonder how they managed to be a trusted admin so quickly?