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How secure are SMS verifications?

MESSAGING app Signal, which is often considered one of the most secure, was recently affected by a phishing attack suffered by Twilio, the company providing Signal with phone number verification services.

So, what is a secure method for two-factor authentication (2FA)?

‘The most secure method for two-factor authentication is most likely one designed with security and maintainability in mind,’ said Jamie Boote, security consultant at Synopsys. CONTRIBUTED PHOTO