combobulate.com— If you don't want to superglue your keyboard onto your computer as suggested in the digg about the $440 million bank heist this is a simple method to defeat them.
Apr 21, 2006View in Crawl 4
Do you mean measure when more current than usual is being drawn? That is actually a good idea, but the problem I see is turning on and off the caps/num/scroll lock turns a LED on that draws more power which could set it off.
Doesn't matter. You can infer witch keys they are "pressing" based on the relative mouse movements. First, you know their mouse movements for a while before that. There are also default positions in which a window opens (from a quick check--osk opens up on the bottom of the screen in a fixed position). In cases of a non-fixed position, they're opened relative to the current position of the mouse cursor. Assuming that passwords tend to span the length of the keyboard, you can also lower down the number of possible "enclosing rectangles" (for the virtual keyboard window) that could be used.Other knowledge, such as the frequency of keys within the language they're using and the tendency to click in the center of the virtual keys, will let you deduce what they're pressing. Keep in mind, researchers have created algorithms to figure out what keys you press on your (real) keyboard based on sound alone, exclusively based on frequency of letters in the English langauge. If they can do that, analyzing mouse movements is certainly feasible.Solution: Use special virtual keyboard software that uses random key layouts, possibly even altering after each selection. Counter-solution: Electromagnetic tempest. Now you need to shield keyboards and mice (assuming an LCD display which wouldn't emit much). :-/ That seems unlikely as an off-the-shelf item and retrofitting everything is time consuming and expensive.
diggadeepApr 21, 2006
useful!
isepicApr 22, 2006
I agree with kimos - unless you do like 250 before and 250 after, over and over, seems overkill to me, why not just open up the compter and check?
gygaApr 22, 2006
Do you mean measure when more current than usual is being drawn? That is actually a good idea, but the problem I see is turning on and off the caps/num/scroll lock turns a LED on that draws more power which could set it off.
asoggywaffleApr 22, 2006
well you would prolly do that for the most important things you want to keep secret: passwords, and a lot of password diolauges dont let you paste
gxtiApr 22, 2006
Standard password entry fields let you paste, but not copy.
njyoderApr 23, 2006
Doesn't matter. You can infer witch keys they are "pressing" based on the relative mouse movements. First, you know their mouse movements for a while before that. There are also default positions in which a window opens (from a quick check--osk opens up on the bottom of the screen in a fixed position). In cases of a non-fixed position, they're opened relative to the current position of the mouse cursor. Assuming that passwords tend to span the length of the keyboard, you can also lower down the number of possible "enclosing rectangles" (for the virtual keyboard window) that could be used.Other knowledge, such as the frequency of keys within the language they're using and the tendency to click in the center of the virtual keys, will let you deduce what they're pressing. Keep in mind, researchers have created algorithms to figure out what keys you press on your (real) keyboard based on sound alone, exclusively based on frequency of letters in the English langauge. If they can do that, analyzing mouse movements is certainly feasible.Solution: Use special virtual keyboard software that uses random key layouts, possibly even altering after each selection. Counter-solution: Electromagnetic tempest. Now you need to shield keyboards and mice (assuming an LCD display which wouldn't emit much). :-/ That seems unlikely as an off-the-shelf item and retrofitting everything is time consuming and expensive.
sumorickyApr 23, 2006
None, BUT there are USB-to-PS/2 adapters...
sufferingantApr 23, 2006
Then theres the matter of getting even more time to remove it...