What is OpenID Connect (OIDC)?

OpenID Connect (OIDC) is an identity protocol built on top of the OAuth 2.0 authorization framework that enables applications to authenticate users and obtain verified identity information. Understanding what is OpenID Connect OIDC helps organizations implement secure authentication, support single sign-on (SSO), and simplify identity management across web, mobile, and cloud applications. Unlike OAuth 2.0, which focuses on authorization, OIDC adds user authentication and identity verification.

Why do organizations use OpenID Connect?

Modern applications often need to authenticate users without storing passwords locally. OIDC allows applications to rely on trusted identity providers for authentication while maintaining a consistent user experience.

Organizations use OIDC to:

• Support single sign-on
• Strengthen user authentication
• Reduce password exposure
• Simplify identity management
• Enable secure identity federation

These capabilities help organizations improve security while making authentication more convenient for users.

How does OpenID Connect work?

OIDC extends OAuth 2.0 by introducing an identity layer. After a user successfully authenticates, the identity provider issues an ID token that confirms the user’s identity. A typical workflow includes:

• A user requests access to an application
• The application redirects the user to an identity provider
• The user authenticates
• The identity provider issues an ID token
• The application validates the token
• The user gains access to the requested resource

This process enables applications to verify user identities without directly handling user passwords.

What are the main OpenID Connect components?

Several components work together to provide secure authentication and identity verification.

These components help applications authenticate users consistently across different services.

What security considerations affect OIDC?

Although OIDC improves authentication security, organizations must configure and manage it correctly to reduce identity-related risks. Common security considerations include:

• Token validation
• Secure redirect URI configuration
• Strong identity provider security
• Token protection
• Least privilege access
• Monitoring authentication activity

Organizations should also review identity configurations regularly and keep authentication services up to date.

Supporting secure identity management

Secure authentication also depends on trusted endpoints and consistent security policies. Organizations need visibility into managed devices and the ability to investigate suspicious authentication activity when identity-related risks arise.

Hexnode can support these operational needs through:

• Device compliance monitoring
• Security policy enforcement
• Certificate and access-related configurations
• Centralized visibility into managed endpoints
• Hexnode XDR workflows when authentication investigations require endpoint context

These capabilities help organizations strengthen identity security across managed devices.