I was fortunate enough to write Wiley’s Hacking Multifactor Authentication. It’s nearly 600-pages dedicated to showing attacks against various multi-factor authentication (MFA) solutions and how to prevent them. It picks MFA winners and losers and contains a framework and checklist to help anyone pick the right MFA solution for themselves and their organization.
Refer Here for Original Post and Source https://blog.knowbe4.com/6-lessons-i-learned-from-hacking-130-mfa-solutions