SSO: Single Sign-On in Cybersecurity
SSO stands for Single Sign-On. Single sign-on lets users authenticate once and access multiple applications without re-entering credentials. SSO relies on a central identity provider that issues tokens or assertions to connected services.
How SSO Is Used in Cybersecurity
Security engineers integrate SSO across SaaS and on-premises applications to reduce password sprawl. Penetration testers probe SSO configurations for token replay and session fixation flaws. Architects choose between SAML and OIDC based on application requirements.
What SSO Means for Your Cybersecurity Career
SSO sits at the architectural seam where security, identity, and developer experience meet, which makes it a frequent topic in security-architect and identity-engineer interviews. The vendor concentration in this market (Okta, Microsoft Entra ID, Google Workspace) means hiring teams want named-platform fluency. The Okta support-system breach in 2023 (Decipher File on file) made every CISO ask hard questions about IdP blast radius, which raised the bar on what an SSO-savvy candidate is expected to know about post-breach hardening (session-token rotation, HAR-file scrubbing, support-portal isolation).
Read the full glossary entry: Single Sign-On in Cybersecurity
Cybersecurity Roles That Work with SSO
Related Cybersecurity Acronyms
Frequently asked questions
What does SSO stand for?
SSO stands for Single Sign-On. Single sign-on lets users authenticate once and access multiple applications without re-entering credentials. SSO relies on a central identity provider that issues tokens or assertions to connected services.
What is SSO used for in cybersecurity?
Security engineers integrate SSO across SaaS and on-premises applications to reduce password sprawl. Penetration testers probe SSO configurations for token replay and session fixation flaws. Architects choose between SAML and OIDC based on application requirements.
Definitions are original explanations written for career development purposes. For authoritative technical definitions, refer to NIST, ISO, or the relevant standards body.