Two-Factor Authentication (2FA)
Short definition
Two-Factor Authentication (2FA): Verifying identity through two independent authentication factors.
Meaning and how it works
Two independent authentication factors improve account protection; two codes obtained through the same factor do not necessarily provide 2FA. Protecting telephony and customer data combines technical controls, access rights and organisational processes. Different communication channels can require different safeguards.
Business applications
- Business scenario:
A CRM administrator signs in with a password and confirms access through an authenticator app.
What to check before implementation
Review lawful data handling, key and access management, retention periods, audit trails and recovery procedures. No single mechanism replaces an overall security policy.