lol go to their website and look the big new those people will put on their "new page" "exclusivity we have add XX system, and YY new functions"...
That's the best way to know if they are using custom neuz.. or play v6 or v11 server you are sure to use old neuz.exe..
But yes like you said and it's finally what i'm thinking...Because of those leaked sources file, we shouldn't continue to play to any private server..
But do what you want, if you're confident with people like noah or deadly data or other hackers ...it's your problem
