Twitter Limits SMS-Based 2FA to Blue Subscribers Only: Encouraging More Secure Alternatives

The article reports that Twitter has limited the use of SMS-based two-factor authentication (2FA) to its users who have a "Blue" subscription, which is a paid service that provides enhanced features. Users who have not subscribed to the Blue service will no longer be able to use SMS-based 2FA and will have to switch to other 2FA options, such as security keys, authenticator apps, or one-time verification codes. The article explains that SMS-based 2FA is considered less secure than other 2FA options, as it can be vulnerable to SIM swapping attacks and other forms of interception. Therefore, Twitter's decision to limit its use to Blue subscribers only is seen as a way to encourage users to adopt more secure 2FA methods. The article concludes that while some users may be inconvenienced by this change, it is ultimately a positive step towards improving the security of Twitter accounts. Users are encouraged to switch to more secure 2FA methods as soon as possible to avoid potential security risks.