Norton AV and Update Thread

So the technical support forums are filling with the security errors from this recent patch, and I think we all would love an actual explanation for this.

Some are saying Norton just sucks, others are saying this could be a third party virus. If the later is true, part of me can't help but wonder if this could be the work of the recently banned botters (They edit WoW script along with gold sellers, so would they actually be able to do this?). My imagination is probably just running away on that, but still, a Blue post would be much appreciated by the community.