In the online world, where the means are consistent with the real world, in order to achieve greater authentication security, some scenarios will select two of the above three hybrids, known as two-factor authentication.

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Multi-step verification, or Multi-Factor Authentication (MFA), as the name implies, requires multi-step verification. If you only validate two steps, it's two-step verification of Two-Factor Authentication (2FA)

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Fake Electrum website for phishing A user has stolen 700 bitcoins.

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Note: Electrum-XZC is derived from Electrum and uses different seed phrase criteria, so it cannot be imported.

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We first send out the payment instructions, Alipay's back office received instructions, in Alipay's back-office server on our account balance increase or decrease, if I send to Zhang San, it will account for how much money minus my account, how much money to add three accounts, so that my money to his place.

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You can add multiple outputs using between Electrum and Copay wallets.

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Dynamic . . . Electrum and MyEtherWalle users face phishing attacks.

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Popular wallet developer Electrum has released an emergency patch for a key vulnerability in its Bitcoin wallet. The vulnerability allows any website hosting electrum wallets to potentially steal a user's cryptocurrency. A vulnerability means that the password is exposed to the JSONRPC interface, implying that the hacker has full control over the wallet. The first patch failed to fix the problem, forcing Electrum to release a second update on Sunday night.

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Electrum hackers pre-empted a large number of "normal" electrum servers on the P2P network.

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However, after electrum officials said in early 19th that some security mechanisms should be put in place to prevent this "update phishing", many users of Electrum are still in the old version.

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