LLM Agent Security Assessment
White Knight Labs evaluates autonomous AI agents for risks including prompt injection, unauthorized tool use, privilege escalation, and data exfiltration, delivering actionable findings and tailored remediation guidance.
Testing Autonomous AI Agents Like an Attacker Would
Autonomous AI agents don’t just generate text — they take actions. They call APIs, execute code, query databases, send messages, and chain multiple tools together to complete tasks with minimal human oversight. That autonomy is what makes them valuable, and it’s exactly what makes them a fundamentally different — and often underestimated — attack surface. White Knight Labs’ LLM Agent Security Assessment evaluates autonomous agents the way a real attacker would: by trying to manipulate what they do, not just what they say.
We assess the full agent architecture — the reasoning loop, the tools it has access to, the permissions those tools carry, and the boundaries meant to constrain agent behavior — to identify where an attacker could hijack an agent’s actions for unauthorized ends.
What We Assess
Prompt Injection and Instruction Hijacking
We test whether an agent can be manipulated — through direct input or content it processes from external sources — into ignoring its intended instructions.
Unauthorized Tool Use
We evaluate whether an agent can be induced to invoke tools or APIs outside its intended scope, or to chain permitted tools in unintended, harmful combinations.
Privilege Escalation
We test whether an agent’s access can be leveraged to gain broader permissions than intended, including through indirect paths involving connected systems or credentials.
Data Exfiltration Paths
We assess whether an agent can be manipulated into exposing sensitive data it has access to, including through its outputs, logs, or tool-call side effects.
Multi-Agent and Orchestration Risk
For architectures involving multiple cooperating agents, we assess how manipulation of one agent can propagate through the system.
Our Approach
White Knight Labs treats agentic AI systems as a distinct testing discipline, combining traditional application security and API testing methodology with adversarial prompt engineering specific to autonomous agents. We map the agent’s full tool inventory and permission model before testing begins, so our attack scenarios reflect genuine business impact rather than isolated proof-of-concept prompts.
Testing includes both black-box interaction with the agent as an end user would experience it, and grey-box analysis of the underlying architecture, tool definitions, and guardrails where access is available — giving you the most complete picture of real-world exploitability.
Why You Need This Assessment
As organizations move from simple chat-based AI features to autonomous agents that take real actions on their behalf, the risk profile changes fundamentally — a manipulated agent doesn’t just produce a bad answer, it can execute unauthorized transactions, access systems, or exfiltrate data. This assessment identifies those risks before an agent is deployed at scale or given access to sensitive systems.
This engagement is critical for any organization deploying AI agents with tool access, API integrations, or autonomous decision-making capability, particularly where those agents touch sensitive data or production systems.
Engagement Process
Agent Architecture Mapping
We document the agent’s tool inventory, permission model, and reasoning/orchestration flow.
Adversarial Prompt and Injection Testing
We test the agent’s resistance to manipulation through direct and indirect prompt injection.
Tool Abuse Testing
We attempt to invoke tools outside intended scope or chain permitted tools toward unauthorized outcomes.
Impact and Exfiltration Testing
We assess the real-world impact of successful manipulation, including potential data exposure or unauthorized actions.
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RISK REDUCTION
Our risk reduction strategy melds unparalleled technical acumen with a client-focused approach to deliver targeted, cost-effective, and accessible solutions that fortify your organization against the ever- evolving cyber threat landscape.
BUSINESS INTEGRITY
We leverage our cybersecurity expertise to safeguard your business integrity, ensuring you operate securely, move forward confidently, and build trust in an interconnected digital world.
DATA PROTECTION
We deploy cutting-edge cybersecurity measures and personalized strategies to offer unwavering data protection, reinforcing our commitment to preserving your company’s invaluable digital assets.
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