AI Security + Zero Trust

The Non-Human Identity Risk Most Security Programs Underestimate

4 minVitruvius Cyber Research2026-03-01

Why service accounts and agent identities create major blast-radius risk and how to enforce practical control.

Machine identities now outnumber human identities in most modern stacks, but governance often remains human-centric.

Visibility gap

Organizations track users closely but lack complete ownership mapping for service accounts, tokens, and AI agents.

Privilege mismatch

Automation identities frequently hold broad permissions that survive long past their original purpose.

Lifecycle weakness

Rotation and revocation standards are inconsistent, leaving dormant credentials as a persistent attack path.

Control priorities

  • Maintain a complete machine identity inventory with owners.
  • Enforce short-lived credentials wherever possible.
  • Review privileges and usage patterns on a fixed governance cadence.
  • Include machine identities in incident tabletop and response plans.
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