meebi

On any sensible IRCd this won't happen. Users sneaking in during netsplits will be booted as netriders when the split closes.

CPU load is not the primary issue. SSL on IRC networks for client connections cannot assert that the communication is secure (for example, that all clients in a channel actually bothered to verify the SSL certificate properly). This issue will remain until client verification techniques such as DANE and DNSSEC are widely adopted on for IRC usage.

Most DDoS attacks directed at IRC networks are not government related. IRC networks have a long and proud history of being one of the most DDoS-prone targets on the internet.

According to the leaked documents, denial of the targeted users to communicate with each other.