# 防拆觸發（僅限 Keystone Pro）

由於受機身設計限制，Keystone 錢包的界面只保留了一個用於離線升級的 TF 卡槽，駭客只能通過拆機才能實施物理攻擊。Keystone Pro 在硬件上設計了[防拆自毀](https://blog.keyst.one/self-destruct-mechanisms-unique-defense-against-side-channel-attacks-4cfea3d4eff1)電路，在安全芯片的保護基礎上，雙重預防物理攻擊，一旦監測到拆機行為，防拆自毀就會被觸發，安全芯片內的所有資訊會被自動擦除。一旦觸發了自毀機制，設備就會變磚，但您仍然可以使用助記詞來恢復您的資產。

防拆自毀的有效期限受內部零部件的壽命影響，有效期為 2 年。

[Keystone 錢包 | 防拆自毀原理](https://blog.keyst.one/self-destruct-mechanisms-unique-defense-against-side-channel-attacks-4cfea3d4eff1)


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