Newly discovered flaw makes some YubiKeys vulnerable to cloning

Researchers have discovered a cryptographic flaw in the popular YubiKey 5 series, a hardware security key used for two-factor authentication. This flaw, known as a side-channel attack, compromises the device’s security, despite its intended purpose of adding an extra layer of protection beyond passwords. The flaw highlights the importance of regularly updating security measures to stay ahead of potential vulnerabilities.

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