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Hopefully this doesn't affect ECC DRAM? Also does the problem get worse with increased density - i.e. 16GB modules are more vulnerable than say the 8GB ones?

It helps, but they point out you can get two-bit errors ECC can merely detect (or, much more rarely, 3+-bit errors ECC isn't guaranteed to even detect). Mighty tricky to work out that exploit that flips just the right two security-relevant bits, though.

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