Reading the key.dat.. But usually it seems the encryption is random too, though.
Still seems fishy to me though.
Here's what I have on my mind so far.
1. Why would someone out of the ordinary just email Cowboy6 himself, and he hacked his server?
That for one, doesn't seem right.
And for two, that seems like a ball of bullstuff because hackers go under the radar, not say,
"Hey I forgeted up something you made, heres how to fix it!!"
2. The person who created the list or told Cowboy6 could also be lying in the general sense that the full real keys could still be floating out there somewhere, so no we aren't safe. I don't know why you and the 10 other people are trying to reassure themselves, we aren't safe until it is proven that it is actually the last digits of the keys.
I for one think that hes lying out his ass because hackers don't tell you what they're doing to your computer, they just do it and get out.
Keys are randomly generated, if he got one part he most likely has the whole keys.