So, is anyone else as amused as I am that Apple can release an EFI
firmware update to zeroize MacBook Air memory at boot-time, turning
the heretofore widely-decried inability to upgrade that laptop's RAM
-- due to the chips being soldered to the motherboard -- into an
advantage, and making the Air the laptop of choice for
discriminating, fashion-aware, security-conscious professionals the
world over?
No. Apple (or anyone doing EFI boot, for example, someone doing WDE
for OS X) can easily modify the EFI boot to zero memory. It isn't just
the Air, it's any Intel Mac, but remember those are just Intel EFI
systems.
Note, however, that this does not completely solve the attack. If
someone hits the reset button or yanks power, then you don't get to
erase.
Jon
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