Free users will still be able to use other 2FA methods like authentication apps, which are considered more secure but less commonly used.
Starting next month, Twitter says only paid Twitter Blue subscribers will be able to use text messages as a two-factor authentication method. Free users with the setting already enabled have until March 20 to switch to a different method.
Two-factor authentication, also known as 2FA, helps protect accounts by adding an additional verification step to the login process. For instance, instead of just typing in your password, a website could ask you to enter a code it has texted to you.
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