using images that had php scripts hidden in them. Since images are transferred as code anyway you can add extra code to them if you go about it the right way.,The results are rather messy for the people on the receiving end.
Dear Os, this is new info to me.... I never thought that images may have a risk embedded in them. I used to tell people it is OK to download images from emails because I thought it can not contain viruses. I only thought that exe, doc, php, txt extensions are a hazardous files!
Many thanks for the info! I will be careful with my email from now on and would not download images from people I don't know!!