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        <title>Authy Tag - Viblo</title>
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            <title><![CDATA[Cơ chế hoạt động của các mobile app tạo mã OTP offline]]></title>
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            <description><![CDATA[Bài viết được lược dịch có chỉnh sửa từ nguồn: https://blog.usejournal.com/how-authy-google-authenticator-and-other-offline-otp-generation-app-works-a...]]></description>
                        <dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Nguyễn Huy Hùng</dc:creator>
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            <title><![CDATA[Two Factor Authenticate với Devise]]></title>
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Việc sử dụng password và email/username để login vào hệ thông cũng không thể coi là đủ an toàn. Nếu người khác có thể đoán hoặc biết được...]]></description>
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