We like to give you plenty of warning when we suspect that something unpleasant is coming down the pike, even if it's just one of those likely bursts of Black Hat SEO (web search poisoning) that come with a media-friendly event. Still, I suspect that if I told you we expect lots of malicious activity

So what we really have is a file with a filename extension that looks like a jpg image, but which really acts as a container for a file with a deceptive double extension.