It appears that the Redstorm/Ubi sites have been defaced:
On:
http://www.raven-shield.comhttp://www.rainbowsix3.comhttp://www.splintercell.comhttp://www.ghostrecon.comhttp://www.ghostrecon2.com "This site is defaced!!!
NeverEverNoSanity WebWorm generation 16."
Though, assuming these are sourced off the same service block, it was probably not very widespread. Too bad for the Redstorm/Ubi guys. Though, maybe a coincidence?
** EDIT **
As of this time 5:15PM PST, looks like the sites are starting to return to normal
This comment was edited on Dec 20, 20:16.