IowanAtHeart wrote:
Thanks, How do I know it is a false positive?
Details of what happened here, and what is installed here, please?
For assistance with Microsoft Windows PCs and particularly with questions or concerns with whatever anti-malware app is running on the Windows PC here, I would encourage you to contact the anti-malware vendor support organization. They may well ask for the images involved. (An Apple forum isn’t the best spot for PC and PC anti-malware questions.)
If this was referring to a Mac running macOS as a PC, contact whichever add-on anti-malware vendor is involved. Or remove the add-on anti-malware, and use the built-in anti-malware present within macOS.
It’s also quote possible that this is some advertising popup or related, as there’s more than a little sketchy advertising and scam apps and tools around. That all depends on how you’re transferring the files, and which platforms and tools are involved.
If you want to know what might be wrong with the particular image yourself (or what might be wrong within the add-on anti-malware app), you’ll have to look at the image format (or formats, if it is a polyglot) in use, and at EXIF or other embedded data, and the documentation for the anti-malware app involved, for a start.
Spurious false-positive messages arising for unclear reasons can and do arise with various add-on security tools, unfortunately. Best ask the third-party vendor there, too.
If you want to continue here, we’ll need to know if this is a Mac or Windows PC, if there is any add-on anti-malware involved use here (and what sort), what format the image is using, among other details. And uncomfortable questions, such as how valuable you are as a target for a very well-funded adversary.
Malware embedded in an image is very unlikely, but is remotely possible.