pineapple... this is ridiclious

fyi, it was 'patched' this past server check. but i've heard from merchants that someone's found a bypass again, so it'll be like another week and you'll see it again >_<

Yes, that's correct, to avoid CPU/Memory and DataBase usage most part of security is made at client side, as soon they release new by-pass (to break into hackshield protection), Nexon game servers are no longer aware of the problem, they will keep doing their work: sending messages, update your screen, etc.

It's an expensive solution totally server side, that will depend on their network polices to prevent, filtering and drops those harm packets before it reaches his destiny: our client making us D/C-Lag.

Note that what happens, in short is:
1 - D/C-Lag hacker send massive amount of information to nexon game servers;
2 - Nexon game servers do they normal work and:
a) ask if you accept whispers;
b) show you the private message if you accept;

By "normal work" it means all went "fine" from client to server, it bypassed client side protection.

Even blocking whispers, the problem is on item 2.a:
game server is asking you "yes" or "no" all the time hacker is sending spam D/C-Lag hack. Knocking on your client several times asking for a decision (show the message or tell the sender you don't accept), and it will lock other normal client-server communication.

It's a server side problem:
hacks are using the game server, already connected to your client to D/C-Lag you.

That's why its expensive because it need to change network routers/switch, hire expertise company to analyse packets creating filters, it can't be a database solution (the easy one like I described before) because its high access on database.