SaaS Compliance through the NIST Cybersecurity Framework: Best Practices for Secure Applications

 

The US National Institute of Standards and Technology (NIST) cybersecurity framework provides crucial guidelines for securing networks, including Software as a Service (SaaS) applications. Securing SaaS apps can be challenging due to their varied settings, but implementing certain universal configurations can significantly enhance their security posture while aligning with NIST compliance standards.

Role-Based Access Control (RBAC)

Importance of RBAC

RBAC is essential for NIST adherence in every SaaS app. It defines two types of permissions: functional access and data access. Admin accounts, especially super-admin accounts, are highly sensitive and require strict control through configurations and best practices.

Implementing RBAC

Ensure that each application has a minimum of two admins for redundancy. However, balancing the number of admins to limit exposure is crucial. Automated monitoring should alert when the number of admins exceeds the preferred range.

Eliminating External Admins

External admins introduce security risks, as their authentication tools and password policies are beyond the organization's control. It's advisable to either block external admins from obtaining admin privileges or identify and remove external users with admin rights.

Multi-Factor Authentication (MFA) for Admins

Necessity of MFA

To comply with NIST standards, all admin user accounts should use MFA, such as OTP. MFA adds an extra layer of security, requiring compromise of two authentication systems for a successful breach.

Implementing MFA

Ensure MFA is set as required for admins. While MFA is recommended for all users, it is essential for admins to protect against unauthorized access.

Preventing Data Leaks

Risks of SaaS Data Leaks

SaaS data leaks can compromise sensitive information stored within cloud-based applications. Monitoring permissions for every resource is crucial to prevent data exposure.

Implementing Security Measures

Disable public sharing options ("Anyone with the link") to limit content exposure. Enable auto-expiration dates on invites to prevent long-term access by unauthorized users.

Strengthening Passwords

Password Policy

Follow NIST guidelines for password complexity and management. Avoid mandatory password changes and use long, memorable passwords over complex ones.

Preventing Password Spray Attacks

Require MFA to prevent password spray attacks. Create a custom banned words list to reduce the risk of successful attacks.

Importance of Configurations

Addressing Misconfigurations

Approximately 25% of all cloud-related security incidents stem from misconfigured settings. Review and ensure correct configurations for key management, mobile security, phishing protection, and more to prevent breaches.

Example of a Misconfiguration

The Russian state-sponsored group Midnight Blizzard exploited misconfigurations to breach Microsoft. This incident highlights the importance of reviewing and securing configurations.

Conclusion

Implementing NIST guidelines and best practices for securing SaaS applications is crucial for organizations. By following these universal configurations, organizations can enhance the security posture of their SaaS apps while aligning with NIST compliance standards.