Some suggestions to make it somewhat more secure. Just remember that your password is still in plain text on your computer, so anyone who uses your computer has access to it.

Code:
 on  [color:red]nickserv[/color]:notice:This nickname is registered*:?: {
if ( [color:purple]$network === MyNetIRC[/color] ) { ns identify <yourpassword> }
}


Add this to your Users section (alt-R tab Users)
nickserv:NickServ!NickServ@services.yourircnet.com
(do a /whois nickserv and get the correct info)
More info: /help levels and /help $network

Just type $network<tab> (no not enter) in the status window to know what your network is called.