Is your website or blog at risk from this ImageMagick security hole?

ImageMagick is free, open source image processing software that’s been around for more than 25 years.

You may never have heard of it, or seen its logo, a friendly-looking wizard with a binary-encrusted hat, a long white beard and an image-tweaking wand.

But there’s a good chance that you’ve used ImageMagick without even realising it, for example when you’ve uploaded images to a website or a blogging service for later use on web pages or in articles.

ImageMagick isn’t like GIMP, or Adobe Photoshop, or Apple’s Photo app, where you open up an image in a graphical window and then work on it interactively with a range of design tools from a menu.

ImageMagick is a set of command-line programs that’s ideal for the bulk processing of images in a repeatable way.

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