...i'm gonna translate only the main idea, no reason to translate flood ;)
There's an interesting discussion within the "underground", the discussion's name was "packet control and decrypting". There's no need to do the decryption job! The client performs all the decryptions. I'm gonna tell you one korean secret. This technology is the same, that was used to create "the bot" (walker, i guess ;)). Using this technology one can get 100% access to the server (i mean all the gm privileges). It even works on official server just because it's hard to fix (you'll have to change all the server stuff).
The client, as we know, has packets, which are send to the server, (here's an example of these packets: (Receive)Ride ID:%d bRide:%d, RideType:%d RideClassID : %d). The funny thing is this packet allows us to fly a wyvern. The next one (Receive)TeleportToLocationPacket id:%d, x:%d, y:%d, z:%d, IsValidation:%d allows us to teleport ourselves as if we were a gm.
And there're lots of things like that. I've already tested this and found out that all this stuff works great!
<...during the last paragraph author of this russian article says, how clever one man is and how good he is to tell everybody this exploit...>