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How to Protect Yourself from Twitter’s 2FA Crackdown

The latest bizarre move of Elon Musk’s Twitter ownership weakens the security of millions of accounts. On February 17, Twitter announced plans to stop people using SMS-based two-factor authentication to secure their accounts—unless they start paying for a Twitter Blue subscription. However, there are more secure, free, and easier ways to continue protecting your Twitter account with two-factor authentication.

Two-factor authentication, also known as 2FA or multi-factor authentication, is one of the most effective ways to protect your online accounts from being hacked. When logging in to a website, app, or service, 2FA requires you to log in using your username, password, and then verify that the login is authentic using another piece of information. Most commonly, this involves entering a temporary code that’s generated or sent to you in real-time.

This second piece of information helps to prove that the person logging in is actually you. While billions of passwords have been compromised online, the 2FA code is often delivered to or created by the device that’s in your pocket. Having any kind of two-factor authentication turned on is better than none. However, it isn’t entirely foolproof. For years, security researchers have warned that SMS-based two-factor authentication isn’t as secure as other 2FA options.

That’s because SIM-swapping attacks, where phone numbers are compromised by attackers, letting criminals access 2FA messages and break into accounts. Put simply: using another 2FA option, even if it is slightly less convenient, is your best option.

In its announcement, Twitter said people have 30 days to turn off SMS-based 2FA and move to another option. It said the system had been abused by “bad actors” in the past. On March 20, Twitter will “disable” using text messages for two-factor authentication—unless you pay for the privilege. People have already started seeing pop-ups telling them to “remove text message two-factor authentication” before this date.

However, Twitter’s announcement has baffled, confused, and angry security researchers. They say removing SMS-based 2FA just for people who don’t pay for Twitter Blue doesn’t make any sense and will weaken people’s security if they don’t move to another 2FA option. Here’s what you should do to keep your account secure.

Use an Authenticator App or Security Key

Instead of turning 2FA off on your Twitter account, there are two better options: authenticator apps and security keys. They both work using the same principles as SMS-based 2FA. To enable either of these alternatives you will need to visit Twitter, open it Settings and privacythen Security and account access, Securityand finally Two-factor authentication. (Or just click here if you are logged in). Here you will get the option to use two-factor authentication via an app or using security keys.

Instead of sending your six-digit authentication code via SMS message, authenticator apps are constantly generating the codes themselves and are synced with the services you use. Authenticator apps list all the websites you have registered with them and display the codes you need to enter to login. These codes refresh every 30 seconds. Each time you need to log in to a website or app, you visit the authenticator app after entering your username and password to get the authentication code, instead of waiting for a text message. (It’s particularly helpful if your phone doesn’t have connectivity for some reason).

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