I am wondering the security prospects of LimeWire and Gnutella given Gnutella2. I have read through much of the LimeWire source code, and I think I am going to develop a secure client (the definition and breadth of "security" still need good definitions...) for the Gnutella network for my master's thesis. The network code I have read for (most) open source gnutella clients has been butchered in some sense, being just too thread heavy. Java nio exists now, and with some hacking, can be made secure. What are other's feelings on the feasibility and need for a client of this nature?