Single Sign-On (SSO)
What Is Single Sign-On?
Single Sign-On (SSO) is an authentication method that allows users to log in once and gain access to multiple independent applications or systems without needing to re-enter credentials for each one.
How SSO Works
SSO relies on a central identity provider that authenticates the user and issues a token, which connected applications trust and use to verify the user's identity without requiring a separate login.
Benefits of SSO
| Benefit | Description |
|---|---|
| Improved User Experience | Fewer logins and passwords to manage |
| Centralized Access Control | Easier to enforce policies and revoke access |
| Reduced Password Fatigue | Lowers the risk of weak or reused passwords |
Security Considerations
Because SSO grants access to multiple systems through a single login, protecting the identity provider itself - often with MFA - is critical, since a compromised SSO account can expose every connected application.
SSO streamlines authentication across multiple applications, but its overall security still depends on the strength of the underlying password - making good password hygiene essential.
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