Have you ever wondered what one of those fake emails from "Blizzard" look like? The nastier ones are copies of real Blizzard emails, with the links subtly changed. Other scam emails are a bit more transparent, however.
While we've identified some red flags for you before, let's add a few more, shall we?
If the email refers to the patch you "must" download as "a mod one" then it might not be real.
If they have moved said patch to an external website, then you might want to worry.
If the reason for the move is because, "recently, Hackers have been trying to crack our folders and steal every future project" then it is time for you to roll on the ground laughing. Just hope that Hackers don't team up with the Boogeyman, or Terrorists!
If you are referred to as one of their "lovely members who do not understand" you should get a medal, really. Their repetitiveness is dizzying. Luckily, they will "explain it shortly" for you. I think someone needs a thesaurus (or a brain).