The Carrington Event of 1859 was the largest geomagnetic disturbance (GMD) event of modern times. A GMD event is a solar flare that affects the energy grid and other electronics. An EMP attack would reduce a city like San Francisco to the Stone Age. The White House issued an “Executive Order on Coordinating National Resilience to Electromagnetic Pulses” in March. Both threats pose risks to the enterprise and should be considered as part of business continuity and disaster recovery planning.”]

