Definition ∞ Electromagnetic Analysis involves the study and measurement of electromagnetic fields and their interactions with matter. In the context of technology and security, it can refer to the detection of signals emitted by electronic devices, which may inadvertently reveal sensitive information. This analysis is pertinent to understanding potential side-channel attacks against cryptographic hardware.
Context ∞ Electromagnetic analysis is a relevant concern in discussions about the security of hardware wallets and other sensitive cryptographic devices. News reports may highlight findings where subtle electromagnetic emissions could theoretically be exploited to extract private keys or other confidential data. The ongoing development of countermeasures aims to shield devices from such invasive analytical techniques.
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