On 2015-01-24 07:46, Markus Hitter wrote:
Without a room there's not much to spam.
Unfortunately this is very much not true. There are all sorts of attacks on IRC, including bots that use multiple connections where one collects data from channels and another actually sends the spam via direct PRIVMSG.
It wouldn't be impossible to neuter the IRC protocol to allow registration over Tor but otherwise render unauthenticated users harmless to the network, but unless there is some way to verify that the user is human, bots would quickly get written to register nicks and set themselves up via Tor, abuse the nick until it's burned and move on.