instant messengers and security

Página Principal
Anexos:
Mensagem como email
+ (text/plain)
Apagar esta mensagem
Responder a esta mensagem
Autor: datawolf@ibm.netdatawolfibm.net
Data:  
Assunto: instant messengers and security
Does anyone know if any instant messenger software provides better
security (or less bad security) than others?

I've set up my firewall at home now that I have DSL, and want to keep it
locked down. I've been using icq (licq), and wonder if I should
continue to do so.

-BVG