A news item from NBC about computer and phones getting hacked in Russia during the Sochi Games. http://www.nbcnews.com/video/nightly-news/54273832/#54269161
The report shows them using Apple computers, but Windows computers would likely be compromised even quicker. It is interesting to note that the security geek is using a Linux Ubuntu computer. I guess he's not getting hacked, nor would a Chromebook. However, any device could be subject to a man-in-the-middle attack, meaning that the communications between your device and the web service you're using is being compromised.