I found this on Fodor's chat board.. please be aware.
Here is an article from Reuters - very scary since I'm all over the internet planning our trip to Italy in the fall. (This doesn't apply to Macs, only PCs)
For anyone else planning a trip and doing a lot of internet surfing, please read.
http://www.reuters.com/article/internetNews/idUSN1838812020070618?pageNumber=1