Toxbot

Toxbot (a.k.a. Codbot) is a computer worm that targeted Microsoft Windows XP, Windows 2000, and Windows Server 2003{{Cite web |title=WORM_CODBOT.AF - Threat Encyclopedia {{!}} Trend Micro (BE) |url=https://www.trendmicro.com/vinfo/be/threat-encyclopedia/malware/worm_codbot.af |access-date=2024-12-30 |website=www.trendmicro.com}} and was primarily active in 2005. On infected computers, it opened up a backdoor to allow command and control over the IRC network, thus creating a botnet that at its peak comprised about 1.5 million computers.{{cite web |url=http://www.techweb.com/wire/security/172303160 |title=Dutch Botnet Suspects Ran 1.5 Million Machines|accessdate=2008-01-28 |url-status=dead |archiveurl=https://web.archive.org/web/20080128203714/http://www.techweb.com/wire/security/172303160 |archivedate=2008-01-28 }} The two unidentified makers of the botnet were arrested in October 2005 and received jail sentences of 24 and 18 months and fines from a Dutch court.{{Cite web |url=http://software.silicon.com/malware/0,3800003100,39165572,00.htm?r=1 |title=Silicon |access-date=2007-05-21 |archive-date=2007-09-26 |archive-url=https://web.archive.org/web/20070926225458/http://software.silicon.com/malware/0,3800003100,39165572,00.htm?r=1 |url-status=dead }}