I heard they recently switched to pagers because cell phones where deemed to be compromised. So I think besides the direct deaths and injuries, this attack also targeted lines of communication and trust in technology as a whole (or anything supplied by your superior even).
Keep in mind an unencrypted /boot partition still leaves you open to an evil maid attack. I'm not really paranoid (or interesting) enough that I feel the need to take measures to prevent those kinds of attacks, but your situation may differ.
I can't believe I almost ate a non-existent onion.