EMP Threat Breakdown: What You Need to Know An EMP attack happens in three phases: E1 – The most dangerous phase, damaging small electronics like phones, cars, and airplanes. E2 – Similar to a distant lightning strike, typically not harmful unless E1 has already weakened defenses. E3 – The long-term surge that damages power grids and infrastructure, frying transformers and electrical systems. Understanding these phases is key to protecting your electronics and home. Are you prepared? The latest