Convert JPGs to PNGs and back? If the conversion tool doesn't give an error, it will surely corrupt the virus. (Discard the file if the conversion tool gives an error.)

That's not a bad idea. My only concern is that, since JPEG's a lossy format, re-JPEGging an image might introduce more compression artifacts. In that case, you might want to leave the image as a PNG. (I can't offhand think of any reason why you'd want to use JPEG instead of PNG... I think the compression rates are pretty similar these days.)

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F o x t r o t U n i f o r m
Found a typo in this node? /msg me
% man 3 strfry

In reply to Re^4: prevent arbitrary code execution in images by FoxtrotUniform
in thread prevent arbitrary code execution in images by bear0053

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