Two-factor authentication (2FA) is an increasingly popular – and necessary – approach to securing digital assets. It requires two different forms of identification from a user in order to access their account or complete a sensitive transaction.
An account holder may, for example, be asked to follow the entry of their password (the first factor) with a biometric scan or a time-sensitive code delivered to their mobile phone (the second factor). The combination of different factors of authentication in a short time frame makes this a highly effective means of preventing account takeover attacks and fraud exploiting stolen login credentials or interception of digital communications through malware.