One of the reasons I don't use a client.
I like to manually download and open the zip files myself. This way I know what I'm going to be extracting to my hard drives.
And I don't think this will affect anyone who used the curse client. The client will not download the virus unless you tell it to get a certain infected zip (now removed). It will effect you if you downloaded a Mod called "Time Calculator". It contained a single exe file. Problem with the client is it does not care what's in the zip files. It just extracts is.
Just another reason why I like shopping here over the other sites. Security. Curse needs to follow suite