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Single Sign-On (SSO)

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Overview

Single Sign-On (SSO) is an authentication process that enables users to access multiple applications or systems with a single set of login credentials. It addresses the problem of managing multiple passwords and streamlines user access across diverse platforms while enhancing security and user convenience.

Primary Security Objectives

Mitigate risks related to password fatigue and credential reuse
Enable centralized authentication and access control
Focus on protection through secure credential management and governance of user access

Where It Is Used

Enterprise IT environments, cloud services, and web applications
Protects user accounts, corporate resources, and sensitive data workflows
Commonly deployed in organizations with multiple internal and third-party applications

How It Works (High Level)

SSO operates by authenticating a user once and then providing a token or assertion that grants access to multiple connected systems without requiring repeated logins. This token is trusted by the integrated applications, enabling seamless access while maintaining security controls.

Key Capabilities

Centralized authentication and session management
Support for various authentication protocols and token formats
Access control enforcement and user identity federation

Benefits and Limitations

Reduces password-related security risks and improves user experience
Facilitates compliance through centralized access auditing
Potential single point of failure if the SSO system is compromised
May require complex integration and careful configuration to avoid security gaps

Integration and Dependencies

Integrates with identity providers, directory services, and application access management systems
Depends on robust identity verification and secure token exchange mechanisms
Requires operational policies for credential lifecycle and incident response