Why in news?

• Indian researchers have built a low-energy security chip to prevent side channel attacks (SCA) on loT (Internet of Things) devices.
• SCA aims to extract sensitive information like cryptographic keys, proprietary machine learning models and parameters by measuring things like timing information, power consumption and electromagnetic leaks of a system.
• They are also referred to as sidebar attack or an implementation attack.
• They are difficult to detect and defend against.
• Types of SCAs: Timing attack, Electromagnetic (EM) attack, Acoustic, Power, Optical, memory Cache, hardware weaknesses.