[GingisK]

...and that is accomplished by a wrap-around steel housing. You also need protection for leads that penetrate that housing. That is accomplished with inductors, a spark gap, TVS diodes, and a diode clamp. Most instrumentation that is used outdoors is already EMP hardened. Lightning causes an EMP burst that is just like the one made by high altitude nuclear detonations. We must plan for very near lightning strikes.

People overestimate the EMP threat from nukes; however, the threat comes mainly from unshielded magnetic coils like those in stereo speakers.

In all cases of a nuclear weapon, your distance from the burst controls the harshness of the affects. If the Russians launch everything they have, working electronics will be the least of your worries.

[DarthVader]

There are miniaturized advances in Faraday shielding which are amazing that I have seen at shows and tech expos. There are also devices out today both nuclear and non nuclear that can generate sufficient energy for either large or small scale EMP attacks. This is due to the new thrusts going into Asymmetric warfare.