A group of developers has a shared backup account to access the source code repository. Which of the following is the best way to secure the backup account if there is an SSO failure?

Remote Access Service (RAS) provides remote users with access to a private network. While it can be useful for remote connections, it does not specifically address the security of shared backup accounts or mitigate risks associated with SSO failures. RAS focuses more on connectivity rather than robust account security.

Extensible Authentication Protocol (EAP) is a framework used for network access authentication. Although it enhances security protocols, EAP does not directly provide a solution for managing shared accounts or securing access in the event of SSO failures. Its primary function is to facilitate diverse authentication methods rather than managing privileged access.

Security Assertion Markup Language (SAML) is used for exchanging authentication and authorization data between parties, particularly in SSO scenarios. However, SAML does not address the issues that arise when SSO fails. In such cases, securing shared accounts requires a more focused approach like PAM, which can enforce additional security measures.