Professionally written-malware is rarely unsubtle. Long, slow and stealthy attacks are generally the rule—but a rogue malware author has decided to break that rule by going fast and loud.

What’s more, this approach is actually finding a great deal of success, which should have retailers worried in the lead up to the holiday season. How is it that this ruthless smash-and-grab approach is working? The short answer: signature-based endpoint protection products are still too weak.