While the news about the dispute between Apple and the FBI rages on, security researchers continue to look for other ways into products, not just the iPhone. But as a prominent device it becomes a big target and deserves extra scrutiny.
The security experts from Israel and Australia decided to test out the electromagnetic radiation emitted by devices, in this case using an iPhone. The results were interesting, though they won't help in the case of phones in the custody of law enforcement.
You'll need a targeted receiver and a dedicated signal-processing computer, so this isn't a simple hack. It takes advantage of what the researchers describe as a "cryptographic algorithm is ECDSA (Elliptic Curve Digital Signature Algorithm), a standard digital signature algorithm used in many applications such as Bitcoin wallets and Apple Pay. Thus, such applications, especially those that rely on vulnerable versions of OpenSSL, CoreBitcoin or iOS, may expose their users to low-cost physical attacks leading to theft of signing credentials and subsequent unauthorized transactions or false authentication".
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