The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. In cybersecurity, understanding the electromagnetic spectrum is important because electronic devices emit electromagnetic waves that can potentially be intercepted or exploited. Attackers may use specialized equipment to capture data leaks or interfere with communications by targeting specific frequencies. Security measures often include shielding or monitoring electromagnetic emissions to prevent unauthorized access or data breaches.