An electromagnetic bomb, or EM-bomb, is a weapon designed to disable electronics with an electromagnetic pulse. It works by generating a powerful electromagnetic field through devices like a flux compression generator or vircator that induces damaging currents in exposed wiring and circuitry. While it could destroy communication systems and power grids without loss of life, accurately delivering it at long range may be difficult. EM-bombs offer a punitive option against terrorism but also risk harming medical equipment and endangering lives.