SMS text two-factor authentication "bypassed at scale"

Gmail's text-message two-factor authentication is not only insufficiently secure, but 'bypassed at scale', reports Joseph Cox.
A new Amnesty International report gives more insight into how some hackers break into Gmail and Yahoo accounts at scale, even those with two-factor authentication (2FA) enabled.
They do this by automating the entire process, with a phishing page not only asking a victim for their password, but triggering a 2FA code that is sent to the target’s phone. That code is also phished, and then entered into the legitimate site so the hacker can login and steal the account.
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