As most of you are likely aware there was an issue that was brought to our attention that concerned a Trojan program which was transmitted through a fake version of Curse Client and was discussed in detail in this post.
Thanks in large part to the awesome work by the folks in that thread, many of the major security companies have been alerted to the issue and have issued an updated version of their own scanners to detect and quarantine the malicious program.
If you have not done so already I would encourage you to make sure your security is updated, and to scan your system at your earliest convenience.
Thanks,
Araxom
Blizzard Support