On Fri, Sep 28, 2012 at 2:00 PM, Joerg Sonnenberger <jo...@britannica.bec.de> wrote: > On Thu, Sep 27, 2012 at 07:10:29PM +0900, Carsten Haitzler wrote: >> here's the question... this is pretty lame security-wise. shouldn't we be >> military/cia/nsa spec and overwrite it at least 7 times? :) oh and this will >> probably/possible get screwed by logging fs's or flash media that may shuffle >> the blocks around on write :) ie it wont help. > > It's generally lame. Overwriting once with 0s is enough for pretty much > any basic recovery attempt. Anything involving direct physical scans of > the disk is *much* harder (if possible at all) to defend against.
With any big new disk, the actual density of information on disk require to use an atomic force microscope. This means you will have an insanely high resolution image of your disk. Any movement, at the atomic level, during the scan will result to have offset and noise. So your result is an insanely high resolution image where you are trying to get some information out with a lot of noise in. I am ready to bet than even the CIA doesn't have access to this kind of technology and even if they had, the cost of getting that few bytes will be insanely high and I doubt they will use it instead of more classic coercive approach. The more the time goes, the more we pack information on the same surface, the less space there is for erased information to survive. -- Cedric BAIL ------------------------------------------------------------------------------ Got visibility? Most devs has no idea what their production app looks like. Find out how fast your code is with AppDynamics Lite. http://ad.doubleclick.net/clk;262219671;13503038;y? http://info.appdynamics.com/FreeJavaPerformanceDownload.html _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
