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YubiKeys are vulnerable to cloning attacks thanks to newly discovered side channel
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<blockquote data-quote="HarborFront" data-source="post: 1100680" data-attributes="member: 55987"><p>I got the NFC 5C key which was purchased last year</p><p></p><p>I don't think it's easy to break as it requires to access the user's key and tear it down as detailed below</p><p></p><p>[URL unfurl="true"]https://arstechnica.com/security/2024/09/yubikeys-are-vulnerable-to-cloning-attacks-thanks-to-newly-discovered-side-channel/[/URL]</p><p></p><p>Also, YubiKeys provide optional <a href="https://developers.yubico.com/Passkeys/Passkey_concepts/User_verification.html" target="_blank">user authentication protections</a>, including the requirement for a user-supplied PIN code or a fingerprint or face scan. For the cloning attack to work against YubiKeys using these additional measures, an attacker would need to possess the user verification factor as well. More information about using these additional measures to lock down YubiKeys further is <a href="https://support.yubico.com/hc/en-us/articles/15705749884444-Infineon-ECDSA-Private-Key-Recovery-Customer-Resources" target="_blank">available here</a>.</p><p></p><p>So, for a home user I'll say it's still safe to use if the key has an earlier firmware version than v5.7</p></blockquote><p></p>
[QUOTE="HarborFront, post: 1100680, member: 55987"] I got the NFC 5C key which was purchased last year I don't think it's easy to break as it requires to access the user's key and tear it down as detailed below [URL unfurl="true"]https://arstechnica.com/security/2024/09/yubikeys-are-vulnerable-to-cloning-attacks-thanks-to-newly-discovered-side-channel/[/URL] Also, YubiKeys provide optional [URL='https://developers.yubico.com/Passkeys/Passkey_concepts/User_verification.html']user authentication protections[/URL], including the requirement for a user-supplied PIN code or a fingerprint or face scan. For the cloning attack to work against YubiKeys using these additional measures, an attacker would need to possess the user verification factor as well. More information about using these additional measures to lock down YubiKeys further is [URL='https://support.yubico.com/hc/en-us/articles/15705749884444-Infineon-ECDSA-Private-Key-Recovery-Customer-Resources']available here[/URL]. So, for a home user I'll say it's still safe to use if the key has an earlier firmware version than v5.7 [/QUOTE]
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