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What is Two Factor Authentication? | SecurEnvoy

An extra layer of security that is known as "multi factor authentication"

In today's world of increasing digital crime and internet fraud many people will be highly familiar with the importance of online security, logins, usernames and passwords but if you ask them the question "What is Two Factor Authentication?" the likelihood is they will not know what it is or how it works, even though they may use it every single day.

With standard security procedures (especially online) only requiring a simple username and password it has become increasingly easy for criminals (either in organised gangs or working alone) to gain access to a user's private data such as personal and financial details and then use that information to commit fraudulent acts, generally of a financial nature.

How does it work?

Two Factor Authentication, also known as 2FA, two step verification or TFA (as an acronym), is an extra layer of security that is known as "multi factor authentication" that requires not only a password and username but also something that only, and only, that user has on them, i.e. a piece of information only they should know or have immediately to hand - such as a physical token.

Using a username and password together with a piece of information that only the user knows makes it harder for potential intruders to gain access and steal that person's personal data or identity.

Historically, two-factor authentication is not a new concept but its use has become far more prevalent with the digital age we now live in. As recently as February 2011 Google announced two factor authentication, online for their users, followed by MSN and Yahoo.

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