Twitter Shared a blog post announcing upcoming changes to the 2FA login method.

Microblogging site Twitter has officially announced that it will start charging users for verifying and securing their accounts via SMS as a method of two-factor authentication (2FA).

2FA adds an extra layer of security to Twitter accounts, as 2FA not only requires a password to log in, but also a passcode or the use of a security key. This extra step ensures that you and only you have access to your account

However, after March 20, “Only Twitter Blue subscribers will be able to use text messages as their two-factor authentication method,” the company tweeted.

While historically a popular form of 2FA, unfortunately we have seen phone-number based 2FA be used – and abused – by bad actors,” it says in the blog. 

So starting today, we will no longer allow accounts to enroll in the text message/SMS method of 2FA unless they are Twitter Blue subscribers. The availability of text message 2FA for Twitter Blue may vary by country and carrier,” the blog post mentioned.

After 20 March 2023, we will no longer permit non-Twitter Blue subscribers to use text messages as a 2FA method,” the company said in the blog post.

The micro-blogging platform gives non-Twitter Blue subscribers who have already signed up for 2FA 30 days to opt out of this method and sign up for another. However, disabling SMS 2FA will not automatically disconnect your phone number from your Twitter account.

We encourage non-Twitter Blue subscribers to consider using an authentication app or security key method instead. These methods require you to have physical possession of the authentication method and are a great way to ensure your account is secure,” the blog post stated.