Research: Hackers Could Install Backdoor in Bitcoin Cold Storage

Research: Hackers Could Install Backdoor in Bitcoin Cold Storage

Even a bitcoin wallet in cold storage, widely thought to be the most secure way to hold the digital currency, could leak its private keys to an attacker, a security researcher has found. An attacker could reverse-engineer a compromised wallet's private keys from as little information as a single transaction issued by that wallet. The attack is particularly worrying because it would be successful even if the victim maintained a wallet on an air-gapped machine without an Internet connection - or even in space, as wallet provider Xapo is attempting to do - according to the paper by Stephan....


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