Microsoft Entra SSO explained: tokens, protocols and security risks
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A clear introduction to single sign-on, covering Microsoft Entra, authentication tokens, SAML, OpenID Connect and the security risks of centralised access.
TL;DR
Microsoft Entra SSO replaces repeated application passwords with one identity flow. The episode explains the two parties involved in sign-in, signed tokens that prove identity, the roles of SAML and OpenID Connect, and the security risks created when access is concentrated in one login.
Original by Mirko Peters, on M365.FM. Read the original · suggested by Mirko Peters
This is our own summary, not a republication or full translation.
Governance takeaway
- Admins/CoE: Understand Microsoft Entra SSO as a central login path and how signed tokens connect a user to an application, so access flows can be explained and governed.
- Security/Compliance: Treat the shared identity and its tokens as critical security points, because SSO improves convenience while concentrating access and risk in one login.
Frequently asked questions
What do tokens prove in Microsoft Entra SSO?
Signed tokens provide evidence of who the user is during the login flow. The episode presents them as proof carried between the login participants.
Which authentication protocols are covered alongside Microsoft Entra SSO?
The episode covers SAML and OpenID Connect as the two named protocol approaches. It places both within its explanation of modern single sign-on.
What happens when a user selects Sign In with Microsoft Entra SSO?
Two login participants exchange information, and a signed token helps establish the user’s identity. The episode explains this flow in plain language.