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Second, USB was an early favorite of hardware wallets, and Both Trezor and Coin Line were USB solutions, which was related to the underdevelopment of the mobile Internet at the time, and hardware wallet developers prioritized the need to connect computers. The Trezor generation and the second generation are USB solutions, and the Ledger generation is the USB solution, and the second generation is just beginning to switch to Bluetooth.

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The Healthy Security Lab is concerned that Nearly 250 bitcoins have been stolen in a recent hacking attack on an Electrum wallet. This attack, confirmed by Electrum, involves creating a fake version of the wallet to trick users into providing password information. Electrum responded on Twitter that it was an ongoing phishing attack on Electrum users and advised them to download wallets from the official website.

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Cryptocurrency debit cards are very similar to regular debit cards. You can use these cryptocurrencies debit cards to pay at all places where government-issued currency swipes are paid, as they are not only directly related to cryptocurrencies wallets (usually hot wallets), but also allow you to convert the cryptocurrencies in your wallet to French currency at any time for transaction settlement. Because cryptocurrencies debit cards enable real-time exchange of cryptocurrencies and French currency in your wallet, you can also transfer money directly through traditional channels like SWIFT.

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According to GitHub, Bitcoin Desktop Wallet client Electrum has released a 4.0 beta version, adding several important updates that support lightning networks. Electrum primarily adds features such as PSBT (partially signed Bitcoin transactions), Lightning Network, watchtowers (暸 watchtowers), and Submarine Swaps (subliminal switching).

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On December 27, Reddit user u/normal_rc reported that Electrum's wallet had been hacked and that nearly 250 bitcoins (243.6 BTCs, nearly $1 million) had been maliciously stolen, coinelegraph reported. Electrum then confirmed that the attack included creating a fake version of the wallet to trick users into providing password information. Electrum responded on Twitter that "this is a persistent phishing attack on Electrum users" and warned users not to download Electrum from any source other than the official website.