Single Sign-On (SSO) is an important authentication solution that adds security, makes user access easier, and streamlines IT efficiency. With SSO, users can log in once and use many applications, eliminating password fatigue and lessening threats such as phishing and credential theft. Organizations enjoy centralized identity management, enhanced compliance, and lower IT support costs. But SSO is a weakness if one compromised credential provides broad access. To reduce risks, companies need to implement Multi-Factor Authentication (MFA), risk-based authentication, and install real-time threat monitoring to spot and act upon unauthorized attempts of access in real time.