Multi-Screaming-Channel Attacks: Frequency Diversity for Enhanced Attacks

Screaming channels are a type of side-channel attack (a method of stealing data by analyzing electromagnetic leakage from a device) that can work from several meters away on devices with both wireless (RF) and digital components on the same chip. This research shows that attackers can find useful leakage signals at many more frequencies than previously thought, not just at the harmonics (multiples) of the clock frequency, making attacks more effective even in noisy RF environments and at greater distances.