Re: clouds at risk
Daniel, that's exactly the trouble with most of the journalistic scare-stuff out there about EMP: it conflates different threats to different systems, and to use that phrase of Winston Churchill's that Tom Clancy borrowed, you end up with the sum of all fears. The EMPs that can damage a wide area -- basically the ionospheric events -- are relatively low in energy density and have to act over a long distance on a conductor. They threaten the power grid but won't do much to the small electronics in your workplace. The things that produce fields strong enough to cook out small electronics (lightning, close-in tactical nukes, and ebombs) are mostly not wide-area enough to damage more than one facility (in fact, oddly enough, backup to cloud should work rather well against them). For the most part EMPs are either a little spread out sizzle over a wide area, or a big honking ZAP in a small one. You cope with the former by unplugging and surge protecting, and with the latter with offsite backups. All of which are things people should be doing now, and I hope mostly are.
The more sensationalistic reporting has tended to claim that the big, intense effects would occur over a wide area, and that part of the field of possibility is probably unoccupied. It's a little like the media treatment of radioactive waste, which tends to combine the very slow decay of some heavy elements (so that "the threat will remain for thousands of years") with the very fierce radioactivity of some lighter ones ("kills in a short time as the patient's whole body falls apart") -- without noting that what decays slowly doesn't decay energetically, and vice versa.