IRC really isn't that "insecure". If you have your chatroom set to private, network administrators will leave you alone... The only alternative is to go out and buy a server yourself which is probably gonna set you back a fair chunk a month, not to mention it'll be hosted on another server, unless you pay for one yourself which will set you back even more a month. Basically, your best bet is to just use an existing server. Are you planning on doing illegal activity or something? Seems kind of shady to not want ANYONE to see what you're doing, including network admins (who by the way usually leave channels alone unless you give them reasons not to)... No matter what route you take, big brother's ALWAYS gonna be watching.