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Execution Runtime Security in the Era of Agentic AI

September 21, 2026 · Broadcom (Symantec) · Severity: MEDIUM

The death of blocklisting and resurrection of positive controls.

Key Takeaways

  • The era of agentic AI demands a shift from blocklist-based runtime security to positive controls that explicitly allow only trusted behaviors.
  • Traditional blocklisting approaches are ineffective against AI-driven execution patterns that generate novel and unpredictable code paths.
  • Security teams must adopt execution runtime controls that validate and constrain what AI agents are permitted to do at runtime.
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