FediverseユーザーYubikey使ってる人多かったイメージ
脆弱性見つかったみたい（物理的に複製できるみたいで修正不可）

YubiKeys are vulnerable to cloning attacks thanks to newly discovered side channel | Ars Technica
https://arstechnica.com/security/2024/09/yubikeys-are-vulnerable-to-cloning-attacks-thanks-to-newly-discovered-side-channel/