Rizon


Rizon is a large Internet Relay Chat network with an average of around 20,000 users. The IRC network itself ranks number 5 among the largest IRC networks.
Rizon is popular with many anime fansubbing groups who work online, many of whom provide their content through XDCC via IRC bots in their distribution channels. It is also used by many users of eRepublik as a means of communication.
File sharing of other copyrighted material such as Warez is also common in some channels on the network.

Rizon IRCd

Rizon currently uses Plexus IRCd. Plexus was coded specifically with Rizon in mind and is based on ircd-hybrid. Plexus is not exclusive to Rizon as the IRCd is also used by other networks. Plexus versions 1.x and 2.x were originally coded by static & peer. Plexus 3.x was rewritten by ThaPrince and is now maintained and developed by the Rizon Dev Team.
As of the r524 release, the ability for automatic services authentication using SSL client certificates has been implemented, and was largely based on the work done by OFTC, though significant changes were made regarding server-to-server communication.

Controversy

DDoS attack against mIRCX

In early 2004 the mIRCX and Aniverse IRC networks were the victims of Denial-of-service attacks and were forced to shut down temporarily; Aniverse later resumed operations at a greatly reduced capacity. This in turn caused approximately 8,000–10,000 IRC users of various anime fansubbing channels to migrate to Rizon. Rizon was forced to increase its number of servers to handle the additional users. This also had the effect of making Rizon a target for DDoS attacks.
Contrary to rumors, Rizon had no part in a DDoS attack against mIRCX in 2004. Richard "Krashed" Roby was the actual perpetrator who initiated the attacks in retaliation against CJB networks for shutting down his botnet.
Roby was later raided by the FBI as part of Operation Cyberslam.
Initial charges brought against Roby as part of Operation Cyberslam were dropped but he later pleaded guilty to lesser charges and was sentenced to an 18-month prison sentence.