Binance co-founder Changpeng Zhao, better known as CZ, said a developer patch for a self-custody wallet vulnerability does not remove the risk facing wallets that were generated before the fix was released. He made the comment in a repost on X while referring to the ongoing attacks involving Coldcard wallets. CZ said the problem is harder to contain because developers cannot directly reach users who rely on air-gapped devices, which limits how quickly affected users can be warned or guided to respond. Until users take action on their own, he said, their wallets may remain exposed to attack. CZ also reiterated that he still supports self-custody, while stressing that the model comes with greater security responsibility for users.
Binance co-founder Changpeng Zhao, or CZ, said that for self-custody wallets, a developer fix for a vulnerability does not solve the risk tied to wallets that were already generated before the patch. He made the remark in a repost on X in response to the ongoing attacks involving Coldcard wallets.
CZ added that developers cannot directly contact users who use air-gapped devices. That leaves a window in which wallets may stay exposed to attack before users take action themselves. He said he still supports self-custody, but added that self-custody means users have to take on more security responsibility.
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