google-site-verification: google9e7932ef768c3a0f.html
top of page
Search
Writer's pictureKunal Mehta

IGA vs RBAC vs ABAC. Explore Differences and Possibilities for Maximizing Core Capabilities of Each Model

In the evolving landscape of identity and access management (IAM), organizations are constantly seeking more efficient and secure ways to manage user access. Identity Governance and Administration (IGA), Role-Based Access Control (RBAC), Attribute-Based Access Control (ABAC), and Policy-Based Access Control (PBAC) are key models in identity and access management. Collectively they drive a user access throughout their organizational lifecycle at varying granularity level.


Explore how integrating Attribute-Based Access Control (ABAC) with Identity Governance and Administration (IGA) enhances security and operational efficiency.


IGA vs RBAC vs ABAC. Explore Differences and Possibilities for Maximizing Core Capabilities of Each Model

Executive Overview: IGA vs. RBAC vs. ABAC vs. PBAC

  • Identity Governance and Administration (IGA): Provides a framework for managing user identities and their access rights across an organization from joiner, organizational moves and termination. It includes birthright access via entitlements, role management, user self-service for requesting access or password self-service, periodic access reviews, compliance reporting, and auditing. Collectively ensuring secure and efficient centralization of key applications and its data, users and who has access to what, flexible reporting that is aligned with regulatory requirements.


  • Role-Based Access Control (RBAC): Various roles represent logical grouping of common access requirement at enterprise, application or department levels. Roles provides access permissions to targeted resources based on predefined criteria within the organization. Roles are considered coarse grained and are Ideal for stable environments with well-defined access requirements. RBAC simplifies access management, provides business ability to flexibly define what matters to them, simplifies access request process with better descriptions but lacks flexibility for dynamic, context based or complex access needs.


  • Attribute-Based Access Control (ABAC): Grants access based on multiple attributes such as user role, location, and time. ABAC offers fine-grained, dynamic access control suitable for environments with complex or changing access requirements. This model allows for more granular and dynamic access control compared to traditional Role-Based Access Control (RBAC). ABAC policies can utilize combination of user demographics, requested resource properties and context/environmental specifics. ABAC models take time to plan, implement and maintain, but for large organization with use cases that can’t be addressed by just IGA and RBAC, ABAC investment is well justified.


  • Policy-Based Access Control (PBAC): PBAC focuses on authorization and take into account dynamic policy evaluation to make authorization decision. The model uses policies including toxic combinations to provide adaptable and context-aware control, accommodating complex scenarios and evolving organizational needs. It can leverage attributes to make decisions that limit a user’s access to specific information (e.g. columns, particular file, or even specific details within a file).


IGA offers comprehensive identity lifecycle management, RBAC provides simplicity with role-based permissions, ABAC delivers dynamic and granular access control, and PBAC ensures flexible, policy-driven access management. Which model is right for an organization depends on the business objectives, planning and execution time, budget and organizational balance of ideal state vs acceptable state. Choosing the right model depends on your organization’s specific needs and complexity.


Can IGA alone be enough? Where does RBAC or ABAC fit in?

While IGA, RBAC and ABAC serve different purposes, they can complement each other effectively. IGA handles the centralization of authoritative data and key applications that are utilized to automate user lifecycle (e.g. joiner, mover, leaver). IGA provide tools and workflow that streamline operations, auditing and reporting capabilities, user self-service and administrative aspects of identity management. RBAC can add a layer on top of IGA to provide static roles that are primarily focused on coarse grained business functions that takes into account a limited context based attributes such as department, business unit, job function, application, and responsibilities.


Many organizations operate efficiently with IGA use cases augmented by RBAC. While RBAC simplifies access management by assigning access based on predefined roles, it lacks the flexibility to adapt to changing contexts and complex scenarios. RBAC struggles with dynamic environments where users' roles, responsibilities, or attributes frequently shift, such as in project-based work or multi-departmental collaborations. It also fails to accommodate context-sensitive access requirements, like time-based restrictions or location-specific controls. As a result, organizations may find RBAC insufficient for meeting the demands of sophisticated access control, ABAC would provide more granular, adaptive, and context-aware solutions


Where in the User Lifecycle Can ABAC Help?

ABAC can be particularly beneficial at various stages of the user lifecycle:

  1. Birthright Access: When a new employee joins, IGA solutions assign the required set of entitlements and permission that allow the user to access resources they need. However, the access, even via RBAC is static and typically a little broad to avoid role proliferation. ABAC can dynamically assign access based on attributes such as department, role, and location. Even organization with sufficient resources and experienced teams, birthright access remain a contention point on the right balance of speed/quality of access. For matured organizations, ABAC, in addition to RBAC, can help ensure a new hire becomes productive with appropriate access within a day. The typical “model after” is all too often ends up giving over access than necessary.

  2. Access Reviews and Audits: Organization struggle to provide appropriate audit trail and evidence of access – both from joining to a user’s evolution in an organization over a period of time all the way to timely access removal that should occur during organizational moves and upon termination. This approach often results in gap by time a user’s access is removed leading to risks. Especially for sensitive access, timely access management – both rapid access or removal - is not optional but critical. Leveraging ABAC models to augment IGA capabilities can simplify access reviews by providing detailed insights into why access was granted based on specific attributes. Having an external ABAC to enforce policies can greatly reduce the risks in addition to improved user lifecycle events.

  3. Temporary or Conditional Access: As employees change roles or responsibilities, ABAC can automatically adjust their access rights based on updated attributes. Several organizations do copy or model after access provisioning that results in over provisioning and likely access is not even aligned with the required job functions.

  4. Dynamic Access Based on Contextual Factors: Roles can grant access based on user attribute (e.g. department or location). When an organization wants to control granular level of access, for example, access based on time or date, location, run-time evaluation for access to sensitive information, make decisions based on AD group memberships on real time basis etc, ABAC model can help when access policy is based on relationship or connection of user and resource. For example, a user may have enterprise Role that gives them access to critical applications, but ABAC can control access to specific application capability.


Which Organizations Benefit from ABAC vs. Core IGA Capabilities?


Organizations that can benefit from ABAC:
  • Large Enterprises: With complex access needs and distributed workforces, large organizations can leverage ABAC for its granular control and flexibility. For example, we have a utility client who utilizes IGA with ABAC model to validate critical access prior to granting, and every time a user, at the time of user accessing critical application to validate the authorization.

  • Highly Regulated Industries: Sectors like healthcare, insurance, sensitive technology and finance, which require stringent access controls and detailed audit trails, can benefit from the dynamic and context-aware nature of ABAC in addition to IGA and Roles.


Organizations that can stay within core IGA capabilities:
  • Organization with Limited Budget and Operational needs: RBAC, ABAC or PBAC models to work require a lot of upfront effort and maintenance. This time to production takes a lot of organizational personnel time and possibly external consultants. These organization can benefit and still be efficient with IGA capabilities.

  • Small to Medium-Sized Businesses (SMBs): For organizations with simpler access control needs, limited critical applications, and use cases that doesn’t add any benefit with ABAC complexities can leverage core IGA capabilities to achieve their objective. This organizations, can leverage a static roles and do away without the ABAC.

  • Organizations with Stable Roles: Companies where access requirements are relatively static can leverage combination of enterprise, application and functional roles augmented by toxic combinations that can be leveraged at time of requesting access. These organizations may not need the dynamic capabilities of ABAC.


Conclusion

ABAC represents a powerful evolution in access control, offering more granular and adaptive security measures compared to traditional RBAC approaches. By integrating ABAC with IGA systems, organizations can achieve a more dynamic and context-aware access control model that enhances security and operational efficiency. However, the decision to implement ABAC should be based on the complexity of the organization’s access needs and its ability to manage the additional complexity of attribute-based rules.


Organizations must assess their specific requirements—such as the dynamic nature of user roles and access needs—to determine whether ABAC provides added value over core IGA functionalities. While ABAC offers a robust solution for complex and evolving environments, core IGA capabilities may suffice for simpler scenarios. The integration of ABAC with existing IGA solutions can deliver a comprehensive and adaptable access control framework, ensuring both flexibility and granularity in access decisions. CredenceIA team can assess your specific needs and provide a road map for efficient utilization of IGA, RBAC or ABAC capabilities with measurable outcomes.


CredenceIA helps Organizations to Explore Differences and Possibilities for Maximizing Core Capabilities of Each Model

CredenceIA offers comprehensive cybersecurity planning, assessment, implementation, and managed services solutions to help organizations balance efficiency and effectiveness in managing their existing security initiatives. CredenceIA Consulting’s team is dedicated to helping organizations reduce their risk of attack, streamline regulatory certification and compliance , elevating cybersecurity defenses with IGCG, improve operational efficiencies , improve access governance and increase end user engagement. Our experienced team helps CISOs with making business case for modern IAM, IGA programs with effective SOD controls implementation, stay compliant, provide foundation for effective program planning from requirements to organizational change management.


CredenceIA’s RBAC team brings extensive expertise in shaping strategy and governance frameworks, and in designing and implementing role-based access controls for enterprises across various industries. Crafting effective roles involves more art than science, and CredenceIA’s services are designed to navigate common challenges associated with traditional RBAC models, particularly in role governance. Our solutions help establish access management frameworks and technologies aligned with Zero Trust principles.


Our services include:


  • Strategy and Roadmap: Developing RBAC, ABAC, and PBAC strategies to enhance IGA capabilities.

  • Implementation: Planning and executing RBAC, ABAC, and PBAC solutions with measurable outcomes.

  • Role Design and Governance: Analyzing, planning, and integrating roles with IGA and role governance.

  • ABAC Policy Authoring/Design: Crafting and structuring access policies for effective control.

  • Organizational Change Management (OCM): Facilitating communication, socialization, and support or major changes such as IGA, roles, and ABAC.

  • Program Management Office (PMO): Overseeing program planning, budget management, and project execution.

  • Managed Services: Providing ongoing support for IGA and ABAC systems.


By partnering with CredenceIA, our clients get personalized attention, agility, cost-effective solutions, and deep expertise. Your organization's security is not a one-size-fits-all matter, and neither should your service provider be. Contact us today to experience the CredenceIA difference and to discuss how our expert advisors can help your organizations to address the elements of 'Next-Gen' Identity Security

 

Note: This blog is for informational purposes only and should not be considered as professional advice. For specific cybersecurity guidance and implementation, consult with a qualified cybersecurity consultant at CredenceIA Consulting.

55 views0 comments

Comentários


bottom of page