Thursday, February 23, 2017

billing hack

billing hack

so many have seen a video circulating theweb on a new way for people to steal your pin at an atm or the grocery store. it uses a new technoogy called the flir onewhich slides onto your iphone and shows you thermal images. that video was designed to shock and scareyou. now before i get to the technical aspectsof this misinformation, let's head on over to the grocery store to try this out. here's footage taken from the pin pad at cvsas the transaction takes place. as you notice, it appears that the pin pad and the fingerare roughly the same temperature. we looked

at multiple pin pads from various places andthey were all heated by the internal electronics, which makes for a pretty sorry scenario forthe hacker. here in this picture, we looked at a telephonethat was not affected by the heat from the internal electronics. even in this case, thepin entry did not contain enough information to be useful for a hacker. okay, so how did that other guy get such awesomevideo images that seem to show the pin sequence. to find out, we ask one of our lead specialistsin thermal technology. thank you for joining us. dadda.

so, how did the guy in the hack video getsuch great video images of the pin-pad? it's all about the temperature differential. hmm. okay, so using this information, we founda keyboard that was much cooler than the touch, so there was a large temperature differentialbetween the keys and the fingers. when we input the pin in a normal way, we can seethat it slightly changes the temperature, but you still can't see the sequence. if instead,we hold each key for different amounts of time, we change the amount of heat which istransferred to each key, and now we can see the sequence information. this is likely areasonable explanation for how the image was created that shocked the world.

okay, so are you saying the man in the hackvideo fabricated the picture to make it seem like a legitimate image? pre-slicely.

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