Which in reality could be snipped to "one guy", and not lose any real meaning.
You can read the whole stream from the 10th to follow how this was put together. It's not really HACKERS ON STEROIDS material; he was contacted by an ex-BoA employee because he ran http://bankofamericasuck.com/.
Contrast this no-4chan/no-hacking reality with breathless headlines like: "4chan hackers leak internal Bank of America emails" -- http://venturebeat.com/2011/03/13/anonymous-bank-of-america/
Which in reality could be snipped to "one guy", and not lose any real meaning.