virus in lineage 2 download

When i downloaded L2 i found a virus with norton and deleted it.. its name is win32 and attackes your system files through the internet so you have to shutdown every 5 minutes.. dell is calling it a wormhole virus. My friend didnt have norton on when he downloaded L2 so the virus wrecked his computer... he had to reformat and has to call norton now for a permanent solution to the virus. If you are dling L2 make sure you leave norton on.