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The researchers have released proof-of-concept software to demonstrate the trick, including a paper , entitled .The study provides the first public confirmation that a sophisticated hacker tactic long suspected to be part of the playbook of intelligence agencies, feds and others is not only possible but relatively straightforward.Normally, any program running on a Mac Book’s central processing unit that takes images through Apple's i Sight camera would turn on the tell-tale light.Brocker and Checkoway's reprogramming tactic allows the camera and it light to be activated independently, so that the camera can be running while the light is switched off.The same technique that allows us to disable the LED, namely reprogramming the firmware that runs on the i Sight, enables a virtual machine escape whereby malware running inside a virtual machine reprograms the camera to act as a USB Human Interface Device (HID) keyboard which executes code in the host operating system.We build two proofs-of-concept: (1) an OS X application, i See You, which demonstrates capturing video with the LED disabled; and (2) a virtual machine escape that launches and runs shell commands.

However Stephen Checkoway, a computer science professor at Johns Hopkins University and graduate student Matthew Brocker were able to circumvent this security feature by reprogramming the micro-controller chip inside the camera.In countries where there are lots of stray cats and dogs, many are in poor condition, especially compared with the truly wild animals that live in the same places. The battle for survival must be incredibly tough for all these animals.Is it because feral domesticated animals can somehow live on in poor health through their association with humans, whereas nature would ruthlessly pick off any weaklings in the wild animal population?My French granny says it is more hygienic to poo in a big hole in the garden, like she did when she was growing up, than it is to go inside. She also said that in olden days, people collected pee and used it to make plants grow better. An earlier question in The Last Word gave warnings about eating leftover rice.I have seen this advice before, saying it is not safe to keep cooked rice for more than a short time, even in the fridge.