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How to Implement MFA/2FA in CodeIgniter 4 with Google Authenticator

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How to Implement MFA/2FA in CodeIgniter 4 with Google Authenticator

Security is no longer optional for modern web applications. Password-only authentication is vulnerable to phishing, credential stuffing, and brute-force attacks. This is why Multi-Factor Authentication (MFA)—also known as Two-Factor Authentication (2FA)—has become a standard security requirement. In this step-by-step tutorial, you will learn how to implement MFA/2FA in CodeIgniter 4 using Google Authenticator with complete working code examples.

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