Add CAPAB IDENTIFY-MSG ability
How can I tell when someone might be spoofing a user's identity? If your client supports CAPAB IDENTIFY-MSG, you can configure it to let you know when someone speaking on channel or via /msg is not identified to services. Scripts to take advantage of CAPAB IDENTIFY-MSG are currently available for irssi and mIRC, and a patch is available for sirc and ksirc. If you want other people using this feature to know that you're you, have your client identify to nickserv when you connect to the network. You should also follow the canonical setup steps for your IRC nickname.