^ "The Activision/Blizzard Merger: Five Key Points". Industry News. gamasutra.com. December 3, 2007. Archived from the original on December 21, 2008. Retrieved February 24, 2009. One of the intriguing things about the old Vivendi structure was that, even when Martin Tremblay joined to run Vivendi's publishing, it was specified: "World Of Warcraft creator Blizzard Entertainment has been designated a stand-alone division reporting to VU Games' CEO, and is not part of Tremblay's product development mandate.
In September 2006, reports emerged of spoof World of Warcraft game advice websites that contained malware. Vulnerable computers would be infected through their web browsers, downloading a program that would then relay back account information. Blizzard's account support teams experienced high demand during this episode, stating that many users had been affected. Claims were also made that telephone support was closed for isolated periods due to the volume of calls and resulting queues.[115] In April 2007, attacks evolved to take advantage of further exploits involving animated cursors, with multiple websites being used.[116][117] Security researcher group Symantec released a report stating that a compromised World of Warcraft account was worth US$10 on the black market, compared to US$6 to US$12 for a compromised computer (correct as of March 2007).[118] In February 2008, phishing emails were distributed requesting that users validate their account information using a fake version of the World of Warcraft account management pages.[119] In June 2008, Blizzard announced the Blizzard Authenticator, available as a hardware security token or mobile application[120] that provides two-factor security. The token generates a one-time password based code that the player supplies when logging on. The password, used in addition to the user's own password, is only valid for a couple of minutes, thus providing extra security against keylogging malware.[121]

Han pasado cinco años desde los eventos narrados en Warcraft 3. La Alianza y la Nueva Horda viven en un estado de guerra fría, y mantienen una frágil y quebradiza paz, mientras reconstruyen sus reinos y tratan de recuperar su prosperidad. En Ventormenta, el rey Varian Wrynn ha desaparecido en circunstancias misteriosas mientras viajaba en misión diplomática a la isla de Theramore, por lo que en su ausencia, es nombrado rey su hijo Anduin Wrynn, todavía un niño, asumiendo la regencia lord Bolvar Fordragon y la misteriosa lady Katrana Prestor. En Orgrimmar, el jefe de guerra Thrall lucha por sacar adelante a la Nueva Horda.