Genindlogning

Genindlogning, or re-authentication, is the process of verifying a user’s identity by requesting fresh proof of credentials after an existing session has been established. It is used to confirm that the person currently interacting with a system is the authorized user, especially when performing sensitive actions or after a period of inactivity.

Re-authentication is typically triggered by events such as session expiration, security-sensitive operations (for example changing account details, making a payment, or modifying security settings), detected unusual activity, or policy requirements for elevated privileges. The goal is to reduce the risk of unauthorized access due to session hijacking, credential leakage, or stolen devices.

Common methods for genindlogning include re-entering a password, providing a one-time code via email or SMS, using a one-time password (OTP) authenticator app, biometric verification (fingerprint, facial recognition), or approving a push notification through a trusted device. Modern systems may combine methods in multi-factor authentication (MFA) to enhance security while balancing user convenience.

Implementations often involve short-lived re-authentication prompts, separate sessions or tokens for re-authenticated states, and integration with existing authentication frameworks such as OAuth, OIDC, or SAML. Privacy and data handling considerations emphasize minimizing collected data, secure transmission of credentials, and clear user consent for any biometric or device-based methods.

Best practices include pairing re-authentication with a user-friendly experience, ensuring accessibility, providing clear explanations for why re-authentication is required, and setting sensible thresholds for when re-authentication is demanded to balance security with usability.