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Two-factor authentication setup, authenticator apps, passkeys, and backup codes.
Two-factor authentication, often called 2FA or MFA, requires something more than a password before an account can be accessed. It reduces the damage caused by stolen passwords.
Common 2FA methods include SMS codes, authenticator apps, push notifications, backup codes, passkeys, and hardware security keys. They are not all equal. SMS is better than password-only access, but it can be vulnerable to SIM swapping and phone number takeover. Authenticator apps are stronger for many users. Hardware keys and passkeys can provide phishing-resistant protection for high-value accounts.
Attackers now target 2FA too. Some phishing sites ask for codes immediately after stealing passwords. MFA fatigue attacks repeatedly send push prompts until a tired user approves one. Fake support representatives may ask for backup codes. A real service should not need you to read out a code to prove your identity in a random call or chat.
When choosing options, use phishing-resistant methods where available, especially for email, financial accounts, admin accounts, and crypto services. Save backup codes securely. Remove old devices. If you receive a 2FA prompt you did not initiate, deny it and change the password for that account.
This category helps readers compare 2FA methods and choose safer options for different account types.
New articles for this category will appear below. If there are no articles yet, use this guide as the starting point.
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