> Getting lucky and drilling through a part of the enclosure that isn't directly protected won't help you if a barometric pressure sensor is tripped as a consequence of breaking the hermetic seal.

That's interesting. I suppose if that technology is in use, the attack would have to occur in a pressure-controlled chamber, so breaking the seal wouldn't cause a change in pressure.

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MayeulC 4 hours ago | parent | next [-]

A more likely measure, which I recall seeing years ago, is to measure the impedance of the enclosure of the thing you want to protect. If someone tampers with it, you would be alerted. It works at many scales, from a protective metal mesh over your IC to a PC case.

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rcxdude 4 hours ago | parent | prev [-]

And you'd need to have a way to know what the pressure inside is beforehand.

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overfeed 3 hours ago | parent [-]

You can find the pressure through destructive trial-and-error if money is no object - which it isn't for governments when the target hardware is juicy.

	▲	pixl97 22 minutes ago \| parent [-]
		Really sounds very very easy for any lab that can measure molecular levels of gas. Even a very sensitive pressure checker in a temp controlled sealed box would do it.