As a programmer who's had to deal with security risks, I feel pushed to give my own input. While this is hacking that require minimum effort, it's still hacking. Hacking is all about exploiting security faults. In this case, the security faults were so huge that the hacking was made easy.
As far as Ecko making alts visible to other players, that's just a reasonable feature. The problem comes from the true security fault in the way account passwords are managed. When I first had to log into crpg, I asked my friend who introduced me how to figure out my password. When he told me it would be whatever password I entered when I first logged in, I actually laughed cause I thought he was joking. In my mind, there was no way passwords would be set by whoever enters login information first. To this day, I am still baffled by the truth. And then during this hacking incident, I figured out that rather than alts sharing the same password, they're all set in the same way. Not only that, but they're connected to all your other characters and your passwords for all characters can be set from any character. Any security analyst would have had a fit if they had a say in that setup. Ecko's alt visibility feature may have made this huge security flaw more abusable, but any reasonable analyst could hardly blame him for this incident.
However, there's one thing that I read earlier that I can't ignore
I still maintain my decision to make hellowrold ambassador of BIRD CLAN was the correct one and we stand behind him fully.
Are you serious? My mind is telling me there's no way anybody could be so stupid that they fully support a known and confessed hacker who ruined the game for multiple individuals so this has to be a joke. But then again, my mind also told me there's no way anybody could leave a security hole in a login system so large that any random person could set your password as long as they known your name. While I couldn't agree with a server admin banning a whole clan for the actions of one individual, I wouldn't criticize them negatively for banning anybody would could seriously follow such a line of thought. But if you're being sarcastic, I just don't know you well enough to tell.