Multi-Factor Authentication (MFA)
Multi-Factor Authentication (MFA)
- April 23, 2021
- Posted by: Nicola Selenu

Passwords have an inherent weakness as they can be stolen, guessed or brute-forced. As a result, hardware manufacturers and software providers decided this more secure authentication solution was needed. With multi-factor authentication, the user must authenticate by using two or more separate forms of identification. The classic example of multi-factor authentication in action is a bank customer having to use a card and a PIN to withdraw money from an ATM. Having just one “factor” will result in the authentication process failing and the customer being unable to withdraw cash. Multi-factor authentication can also be applied to email services, such as Gmail, and cloud storage providers, such as Dropbox. Once enabled, the user needs a secondary code (typically sent to a smartphone) or a hardware token to login. This helps to thwart attackers with stolen passwords from logging into a multi-factor secured account. Multi-factor authentication is also commonly referred to as two-factor (2FA) authentication.
Author:Nicola Selenu
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Multi-Factor Authentication (MFA)
Passwords have an inherent weakness as they can be stolen, guessed or brute-forced. As a result, hardware manufacturers and software providers decided this more secure authentication solution was needed. With multi-factor authentication, the user must authenticate by using two or more separate forms of identification. The classic example of multi-factor authentication in action is a bank customer having to use a card and a PIN to withdraw money from an ATM. Having just one “factor” will result in the authentication process failing and the customer being unable to withdraw cash. Multi-factor authentication can also be applied to email services, such as Gmail, and cloud storage providers, such as Dropbox. Once enabled, the user needs a secondary code (typically sent to a smartphone) or a hardware token to login. This helps to thwart attackers with stolen passwords from logging into a multi-factor secured account. Multi-factor authentication is also commonly referred to as two-factor (2FA) authentication.
Author:Nicola Selenu
Email Service Providers Handbook
The most comprehensive “Handbook of Email Service Providers“!
SPAMASSASSIN RULES
All SpamAssassin rules in one place, EXPLAINED!
SMTP COMMANDS
& REPLY CODES
All SMTP/ESMTP commands and reply codes in one place, EXPLAINED!
Free DNS Tool
Check the DNS records of your domain with our free DNS tool.
Deliverability Glossary
The most comprehensive Email Deliverability and Marketing Glossary!