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The Guardian - UK
The Guardian - UK
Technology
Jack Schofield

Freezing chips enables data theft

"A group led by a Princeton University computer security researcher has developed a simple method to steal encrypted information stored on computer hard disks," reports The New York Times.

It's pretty simple. Memory chips hold data for a short while after the power is turned off. Cool the chips and they hold it longer.

"Cool the chips in liquid nitrogen (-196 °C) and they hold their state for hours at least, without any power," Edward W. Felten, a Princeton computer scientist, wrote in a Web posting. "Just put the chips back into a machine and you can read out their contents."


There's a technical paper (PDF) about it.

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