Entries Tagged "camouflage"

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Natural Language Shellcode


In this paper we revisit the assumption that shellcode need be fundamentally different in structure than non-executable data. Specifically, we elucidate how one can use natural language generation techniques to produce shellcode that is superficially similar to English prose. We argue that this new development poses significant challenges for inline payloadbased inspection (and emulation) as a defensive measure, and also highlights the need for designing more efficient techniques for preventing shellcode injection attacks altogether.

Posted on March 25, 2010 at 7:16 AMView Comments

Friday Squid Blogging: Camouflage in Squids

How squids and other cephalopods camouflage themselves:

A clue to how cephalopods disguise themselves so quickly came to Dr. Hanlon when he and his colleagues reviewed thousands of images of cuttlefish, trying to sort their patterns into categories. “It finally dawned on me there aren’t dozens of camouflage patterns,” he said. “I can squeeze them into three categories.”

One category is a uniform color. Cephalopods take on this camouflage to match a smooth-textured background. The second category consists of mottled patterns that help them hide in busier environments. Dr. Hanlon calls the third category disruptive patterning. A cuttlefish creates large blocks of light and dark on its skin. This camouflage disrupts the body outlines.

It’s not often you can find research on the intersection of security and squid.

Posted on February 22, 2008 at 4:09 PMView Comments

Sidebar photo of Bruce Schneier by Joe MacInnis.