Pictures Can Give You Computer Viruses

Nope. Well, not yet. Pictures are just data files that are read by special programs. But, someday, someone may come up with a picture file format that accommodates the inclusion of computer instructions — for whatever purpose someone dreams up.

Are you thinking “macro virus” right now? So am I. Anytime someone comes up with a way to store data that includes a place for simple computer instructions (like Microsoft Word and Excel do), then the risk of malicious instructions becomes a real risk.