Date of Article: 2014-03-27
Source of Article: PC World
I have seen several "images" with multiple extensions as described in the article. Often it is just a file naming convention but something with one like ".jpg.exe" is not something you want to open and that is not an example of a naming convention. I've been having windows display the extensions for files in a directory listing as far back as I can remember.
Finding images with embedded code is very difficult to do. Images already might contain quite a bit of embedded and innocent meta data, especially if they were taken with a digital camera. The advice to keep your operating system, applications, and anti-virus software up to date is a good first line of defense.