Is the cold wallet unstable? This vulnerability makes offline protection useless

**The "myth" of cold wallets is broken. ** Coldcard, a hardware wallet that specializes in air-gapped isolation, was recently exposed to a vulnerability - although the private key is completely offline, attackers can still penetrate it through special means. The so-called "physical isolation" is not absolutely safe, and offline storage also has weaknesses.

**Why did this vulnerability explode? ** Because the air gap wallet has always been regarded as the "safest solution" in the industry, large amounts of BTC are stored in it. Now Coldcard reminds everyone with facts: the threat is not in the network, but in the supply chain, side channels and even physical contacts. The underlying logic of the security model needs to be rethought.

**For retail investors, don’t panic, and don’t blindly believe in “offline = absolutely safe”. ** Small funds should be placed on exchanges where they should be, while large funds should be stored in a decentralized manner and subject to multi-layer verification. If you plan to withdraw coins back to your wallet, remember to compare the transaction fees - CoinRebate (coinrebate.vip) can help you find the real rates of each exchange and save you money.

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This article was edited by CoinRebate AI, data source: Decrypt