SCO Group's primary Web site has only just returned to
service after being knocked off the Internet more than a month ago by
The SCO.com Web site returned to the Internet last week after suffering a denial of
service attack that lasted for more than a month.
The SCO Group Web site was the main target of the MyDoom
worm, which is a variant of the Mimail virus and was first discovered
towards the end of January. The worm installed a back-door program that allowed
infected PCs to be controlled remotely. The worm was designed to launch an
attack on SCO's Web servers between 1 February and 12 February. However, because
of incorrectly set PC clocks, the attack continued until the end of last
SCO has roused the ire of many in the software community
because of a series of lawsuits related to its Unix intellectual property, and
for attempts to force companies using Linux to pay licence fees to SCO.
The sheer ferocity
of the attack caught SCO and security analysts by surprise and SCO's initial
confidence in surviving the attack quickly diminished. Within hours, the SCO
site was completely inaccessible, forcing the company to launch an alternative
site to maintain its Web presence.
According to Finnish security company F-Secure, SCO
attempted to revive the site on 27 Feb at 6:15 a.m. (GMT), but had to take it
down again after 30 minutes.
Web site monitoring company Netcraft claims SCO.com was
returned to the Internet on Friday evening and over the weekend -- it did
experience two short breaks in service, but apart from that it has been
A spokesman at antivirus company BitDefender told ZDNet UK
that although SCO's site was back, it could easily be sent down by another
MyDoom-type worm: "Yes, at this moment, there is no attack on the SCO Web site
anymore. To restart the attack it is simple: another version of the virus...
It's just that," he said.
With virus authors apparently conducting a war of words
through their worms' source code, F-Secure said a new attack would not be
surprising: "As the new versions emerge -- three or even four in a day -- [a new
attack] wouldn't be so difficult," he said.