Security Hygiene
Security terms are most useful when they describe exactly what changes and what remains exposed. This section separates authentication factors, account controls, and recovery paths without promising invulnerability. All guidance is defensive. Readers use official service settings, keep credentials and recovery material private, and involve their organization's IT or security team for managed accounts.

Security Hygiene
What Is Multifactor Authentication? MFA Explained
Multifactor authentication, or MFA, requires more than one distinct type of authentication factor.