The principle of least privilege access is ubiquitous in recommendations, but perhaps too uncommon in practice. Alex Olivier explains how the AuthZen Working Group has been approaching new standards, guidelines, and practical deployment patterns to make it easier for orgs to establish more refined and correct access policies. It's a problem that predates LLMs, but also one that agents and MCPs made all the more acute. We talk about what intent means when trying to constrain agents' activities, what role LLMs have in policy decisions, and how LLMs can help create a much-needed inventory of access controls.
Segment Resources:
Alex Olivier is co-founder and CPO at Cerbos, an authorization management platform, and co-chair of the OpenID AuthZEN working group, the standard for fine-grained authorization.
With over a decade of experience building and scaling authorization systems at Microsoft, Qubit, Zencargo, and multiple startups, Alex has published extensively on securing Model Context Protocol servers and AI agents. A frequent speaker at events on authorization, AI, security, and identity, including KubeCon, Google Cloud NEXT, Identiverse, and EIC, he combines standards development with practical implementation experience, focusing on the future of authorization for traditional applications, distributed workloads, and emerging AI systems.
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