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What is Authentication? | Definition from TechTarget

Authentication is the process of validating an entity’s identity by cross-checking their credentials with a database of approved users to maintain the security of systems and processes. Methods include single-factor authentication (SFA), two-factor authentication (2FA), and multifactor authentication (MFA). Authentication plays a crucial role in cybersecurity, as it safeguards network access and protects sensitive data. It is used in various sectors such as banking, healthcare, and online businesses. Factors used for authentication can include knowledge, possession, inherence, location, and time.

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