Multifactor Authentication — Multifactor authentication requires evidence from more than one distinct authentication factor category. Common categories include knowledge, possession, and inherent characteristics. Two passwords do not constitute separate factors because both rely on knowledge. – Authentication

Added October 7, 2026

Multifactor authentication — Multifactor authentication requires more than one form of verification to access an account. It adds an account-security measure beyond a password alone. The victim enables it while securing accounts after disclosing credentials or discovering unauthorized access. — Account Security

Added October 18, 2026

Multifactor Authentication — Multifactor authentication verifies access using evidence from at least two different categories of authentication factors. Categories include knowledge, possession, and biometric characteristics. Multiple passwords alone do not constitute multifactor authentication because they belong to the same category.

Added November 6, 2026