Glossary
MFA (Multi-factor authentication)
Login protection using multiple independent factors – an extension of two-factor authentication to three or more.
MFA (Multi-factor authentication) generalises 2FA to three or more independent factors: knowledge (password), possession (smartphone, token), inherence (fingerprint, face).
For private users, 2FA is usually enough; MFA with three factors is typical in enterprise and high-security environments.
Why this matters in 2026
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How to protect yourself
A current operating system, an up-to-date antivirus suite, strong unique passwords (use a password manager) and two-factor authentication on all important accounts already cover the vast majority of real-world risk. Detailed guides: see our How-To section.