If Two-factor authentication is not working in Discord on Windows, Re-setup two-factor authentication, Reset Authentication app, etc.

Is Slack not sending authentication code? If two factor authentification not working is not working in Slack, see this post for the proven fixes.

The Gadgets Now team is also experiencing the 2FA problem. What is two-factor authentication? Two-factor authentication is an extra layer of security for a social media account, including Twitter.

As reported by Bloomberg Businessweek, an obscure third-party telecom service had access to at least one million 2FA codes that passed through its network.

Twitter’s communications department, which reportedly no longer exists, did not return WIRED's request for comment about problems with SMS two-factor authentication codes.

You might find two-factor authentication mildly irritating, and there’s a chance you might not even notice the extra step in the login process anymore.

A million two-factor authentication codes sent via SMS passed through an obscure third-party company. Here's how it happened and why it's a problem.

You know two-factor authentication tokens, the ephemeral, six-digit numbers you use as a second layer of security when logging into, say, your email? Those constantly updating, randomly generated ...

Two-factor authentication can be a major barrier against accounts being hacked, so why aren't you using it?

Just how safe is that two-factor login code? An investigation into the complexity of the global telecom system has revealed weaknesses in the transmission of secret codes sent via text messages.

What you might not realise is that new scams have made security codes sent by SMS message or email less secure than they used to be, writes Mike Johnstone.

The common banking practice of sending codes via SMS to confirm financial transactions can cause problems if you’re overseas.