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Two-Factor Authentication (2FA)

A subset of MFA that requires exactly two verification factors to authenticate. Common second factors include SMS codes, authenticator apps, and hardware security keys.

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Related Terms 12
Multi-Factor Authentication (MFA) RBAC (Role-Based Access Control) Access Control List (ACL) Active Directory (AD) Administrator Application Security (AppSec) Attack Surface Authentication Authorization Blue Team Cyber Kill Chain Deep Packet Inspection (DPI)

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