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Machine Identity vs NHI Key to Cybersecurity in AI Era

June 16, 2025•Norbert Kiss, Senior Vice President for APAC at Delinea•Original Link•2 minutes
Cybersecurity
MachineIdentity
AI

Exploring the critical debate between machine identity and non-human identity terms and their impact on cybersecurity strategies.

In the evolving landscape of cybersecurity, the focus has traditionally been on protecting human credentials. However, with the rise of AI and automation, machine identities now dominate, outnumbering human identities 46 to 1. This shift has sparked a debate over terminology—non-human identity (NHI) versus machine identity—and its implications for security practices.

What’s in a Name?

  • NHI: A broad term encompassing all non-human credentials, from IoT devices to AI agents. While useful for policy discussions, its inclusivity can obscure critical security nuances.
  • Machine Identity: Preferred by security experts like Delinea, this term emphasizes technical specifics like certificate management, key rotation, and zero-trust principles. It clarifies ownership and remediation responsibilities.

Scale and Challenges

  • Expanded Attack Surface: With 46 machine identities per human, bad actors increasingly target poorly protected service accounts or API keys.
  • AI Risks: Each LLM agent-generated bot introduces new credentials, often overlooked without continuous oversight.
  • Longevity Threats: Hard-coded certificates in IoT devices can outlive their usefulness, becoming prime targets.
  • Privilege Creep: Machines’ silent operation often masks escalating permissions until exploited.

Solutions

  • Zero-Trust Approach: Delinea advocates for least-privilege enforcement across all identities.
  • Continuous Discovery: Inventory all certificates, API keys, and tokens, tagging them to owners and purposes.
  • Automation: Streamline credential life cycles with policy-as-code, ensuring short-lived identities for AI workloads.
  • AI-Driven Authorization: Implement just-in-time access models to dynamically manage privileges.

Whether termed machine identity or NHI, the mission remains: secure every credential to prevent exploitation. As AI reshapes IT ecosystems, precise terminology and robust management are no longer optional—they’re imperative.

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Claudionor Coelho Jr, Chief AI Officer at Zscaler, discusses AI's rapid evolution, cybersecurity challenges, and combining rule-based reasoning with generative models for enterprise transformation.

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August 18, 2025•Kaydence Shum

Lenovo Wins Frost Sullivan 2025 Asia-Pacific AI Services Leadership Award

Lenovo earns Frost Sullivan's 2025 Asia-Pacific AI Services Customer Value Leadership Recognition for its value-driven innovation and real-world AI impact.

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About the Author

Dr. Sarah Chen

Dr. Sarah Chen

AI Research Expert

A seasoned AI expert with 15 years of research experience, formerly worked at Stanford AI Lab for 8 years, specializing in machine learning and natural language processing. Currently serves as technical advisor for multiple AI companies and regularly contributes AI technology analysis articles to authoritative media like MIT Technology Review.

Expertise

Machine Learning
Natural Language Processing
Deep Learning
AI Ethics
Experience
15 years
Publications
120+
Credentials
3
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