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ARTICLE · 01 MAY 2026

CISA And ASDs ACSC Publish Joint Guidance On Securing Agentic AI Systems

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International cybersecurity authorities have released comprehensive guidance on the secure deployment of agentic AI systems, which autonomously reason, plan and execute actions with limited human intervention. The guide addresses critical security risks including inherited LLM vulnerabilities, expanded attack surfaces, and reduced accountability, while recommending organizations embed security controls from the outset and adopt a progressive deployment approach starting with lower-risk tasks.

AustraliaTechnology
Anna Gamvros
Anna Gamvros
Elise Northcote
Elise Northcote
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On May 1, 2026, the U.S. Cybersecurity and Infrastructure Security Agency (CISA), the National Security Agency (NSA) and the Australian Signals Directorate's Australian Cyber Security Centre (ASD's ACSC), together with cybersecurity authorities from Canada, New Zealand and the United Kingdom, published a guide titled “Careful Adoption of Agentic Artificial Intelligence (AI) Services” (the Guide).

The Guide is directed at organisations that design, develop, deploy and operate agentic AI systems and addresses the cybersecurity risks associated with their deployment, particularly in critical infrastructure and defence settings.

The Guide explains that agentic AI systems are AI systems which autonomously reason, plan and execute actions by combining large language models (LLMs) with external tools and data sources. The Guide notes that these systems are increasingly being deployed across government, critical infrastructure and industry environments to perform complex tasks with limited

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