AI Agent Threat Matrix
Matrix/Initial Access/T-2008
T-2008validated

System Prompt Boundary Bypass

Exploit weak boundaries between system and user prompts to override system-level instructions

Tactic

Initial Access (Stage 2)

Gain control over agent behavior through prompt manipulation or input exploitation

Attack Class

SOUL-INJECT

Directly manipulating or overriding the agent's system-level instructions and behavioral boundaries

Evidence

validated

Reproduced in controlled lab environment (DVAA) with documented steps.

DVAA Validation

L3-04

Detection (HackMyAgent)

SOUL-OVERRIDE-001
npx hackmyagent secure --ci

Defense (OASB Controls)

OASB 3.1OASB 3.2OASB 3.3OASB 3.4OASB 3.5

How to Cite

AI Agent Threat Matrix T-2008 (System Prompt Boundary Bypass). OpenA2A, 2026. https://threats.opena2a.org/techniques/T-2008
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