Guest: Ahmad Salehi Shahraki, Lecturer (Assistant Professor) in Cybersecurity, La Trobe University

On LinkedIn | https://www.linkedin.com/in/ahmad-salehi-shahraki-83494152/

Hosts:

Sean Martin, Co-Founder at ITSPmagazine [@ITSPmagazine] and Host of Redefining CyberSecurity Podcast [@RedefiningCyber]

On ITSPmagazine | https://www.itspmagazine.com/sean-martin

Marco Ciappelli, Co-Founder at ITSPmagazine [@ITSPmagazine] and Host of Redefining Society Podcast & Audio Signals Podcast

On ITSPmagazine | https://www.itspmagazine.com/itspmagazine-podcast-radio-hosts/marco-ciappelli

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Episode Notes

During this "On Location" podcast episode at AISA CyberCon 2024, host Sean Martin welcomed guest Ahmad Salehi Shahraki to discuss cutting-edge developments in access control, identity management, and cybersecurity infrastructure.

Ahmad, a lecturer at La Trobe University specializing in authentication, authorization, applied cryptography, and blockchain, shared insights into transitioning from traditional access control models like Role-Based Access Control (RBAC) to more advanced Attribute-Based Access Control (ABAC). Ahmad emphasized that while RBAC has served as the backbone of organizational security for decades, its centralized nature and limitations in cross-domain applications necessitate the shift to ABAC. He also highlighted a critical aspect of his research: leveraging cryptographic primitives like attribute-based group signatures to enhance security and privacy while enabling decentralization without relying on blockchain.

Sean and Ahmad explored the technical and operational implications of ABAC. Ahmad described how this model uses user attributes—such as location, role, and organizational details—to determine access permissions dynamically. This contrasts with RBAC's reliance on predefined roles, which can lead to rule exploitation and administrative inefficiencies.

Ahmad also discussed practical applications, including secure digital health systems, enterprise environments, and even e-voting platforms. One innovative feature of his approach is "attribute anonymity," which ensures sensitive information remains private, even in peer-to-peer or decentralized setups. For example, he described how his system could validate an individual’s age for accessing a service without revealing personal data—a critical step toward minimizing data exposure.

The conversation expanded into challenges organizations face in adopting ABAC, particularly the cost and complexity of transitioning from entrenched RBAC systems. Ahmad stressed the importance of education and collaboration with governments and industry players to operationalize ABAC and other decentralized models.

The episode closed with Ahmad reflecting on the robust feedback and collaboration opportunities he encountered at the conference, underscoring the growing interest in decentralized and privacy-preserving solutions within the cybersecurity industry. Ahmad’s research has attracted attention globally, with plans to further develop and implement these models in Australia and beyond.

Listeners are encouraged to follow Ahmad’s work and connect via LinkedIn to stay informed about these transformative approaches to cybersecurity.

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This Episode’s Sponsors

Threatlocker: https://itspm.ag/threatlocker-r974

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Resources

Learn more and catch more stories from Australian Cyber Conference 2024 coverage: https://www.itspmagazine.com/australian-cyber-conference-melbourne-2024-cybersecurity-event-coverage-in-australia

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