Called double authentication or two-factor authentication (2FA) is a security method that requires two distinct types of identification to access an account or system.
Two-factor authentication (2FA) is a security measure that strengthens the protection of online accounts by requiring two distinct forms of identification before granting access. This method adds an extra layer of security beyond the simple password, making it much more difficult for unauthorised people to access sensitive information. The three main types of authentication factor are :
- Something you know (e.g. password, PIN code)
- Something you own (e.g. smartphone, physical security key)
- Something you are (e.g. fingerprint, facial recognition)
Advantages of 2FA :
- Significantly strengthens account security
- Reduces the risk of identity theft and unauthorised access
- Protects against brute force attacks and the phishing
It is important to note that although 2FA greatly improves security, it is not infallible. More advanced methods, such as multi-factor authentication (MFA), which uses more than two factors, can offer even more robust security for the most sensitive systems.
