The main web site of The SCO Group has been offline for an extended period today, with several related domains affected as well. The main site at www.sco.com has just returned to service, with the alternate domain www.thescogroup.com having come back online earlier. TheSCOGroup.com was established as an alternate URL during the MyDoom-related denial of service attack on SCO in February, which kept www.sco.com offline for more than a month.

A dynamically upgrading graph of SCO-related sites is available here.

MyDoom.A programmed several hundred thousand compromised machines to launch a DDoS on www.sco.com on Feb. 1. The site was quickly taken offline, and on Feb. 2 SCO announced that it would use www.thescogroup.com as its primary web site for the duration of the event. The attack by MyDoom.A was designed to end on Feb. 12, but the www.sco.com hostname was not returned to service until March 5.