I do not know for certain but I think an electric stun gun or cattle prod may well induce enough current to fry one of these chips. As to a Faraday cage that would protect just about any circuitry from EMP the thinknes does not matter per se. What matters is the completeness of the covering. If the covering is grounded it is even more efficient. Columbs inverse square law is what actually protects the circuitry as long as it is entirely enclosed. Plugging in to an external power source does of course defeat any such cage.
Stay well - Stay safe - Stay armed - Yorktown
All the more reason for that tinfoil hat and suit.