It appears Authy read my Reddit post about multi device vulnerability. They just sent out this mass email. Thanks for everyone who added to the discussion and thanks to Authy for helping to improve our communities security!! (reddit.com)

Dear Coinbase user, We are notifying you because you currently, or have previously, used the Authy app to protect access to a Coinbase account. Due to a recent increase in sophisticated attacks targeting Coinbase users, we are taking extra precaution to protect your account. In combination with social engineering and password theft, attackers are porting phone numbers (also known as SIM swapping). Once they fraudulently gain control of a user’s phone number, attackers can add new devices to…

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