Blizzard Entertainment is an American video game developer and publisher headquartered in Irvine, California, United States. It is a division of Activision Blizzard. Blizzard is the creator of several successful PC games, including the Warcraft, StarCraft and Diablo series, and the MMORPG World of Warcraft.
This SonicWALL signature identifies legitimate Blizzard Client traffic.