Cybersecurity & Cyber Assurance

VAPT vs. AI Red Teaming: What Each Tests in an LLM Application

Your chatbot passed its penetration test. That tells you the API and servers are sound — not whether the model can be talked into leaking data or calling a tool it should not. That is a different test.

01

What VAPT covers

Code, APIs, authentication, infrastructure and cloud configuration around the model.

02

What AI red teaming covers

Prompt injection, data leakage, excessive agency, unsafe output and jailbreaks.

03

When you need both

Any LLM feature that touches customer data or can take actions needs both, on a cadence.

An LLM application has two attack surfaces. One is conventional: the web front end, APIs, authentication, databases and cloud infrastructure. The other is the model’s behaviour: what it can be persuaded to reveal, generate or do through language, documents and connected tools. VAPT tests the first; AI red teaming tests the second.

What a VAPT covers in an LLM application

  • Authentication, session handling and access control on the application and its APIs.
  • Classic injection, insecure direct object references and misconfiguration.
  • Exposure of the model gateway, API keys, vector database and supporting cloud services.

What AI red teaming covers

AI red teaming is structured adversarial testing of the model in context, typically mapped to the OWASP Top 10 for LLM Applications and MITRE ATLAS:

  • Prompt injection — direct, and indirect through documents, web pages, emails or tickets the model reads.
  • Sensitive information disclosure — system prompts, personal data or retrieved documents leaking to the wrong user.
  • Excessive agency — an agent invoking tools, APIs or transactions beyond its intended scope.
  • Insecure output handling — model output passed unchecked into code, queries or other systems.
  • Jailbreaks and harmful output — bypassing safety and policy guardrails.
  • Data and retrieval poisoning — manipulating the content a RAG system relies on.
The short version: VAPT asks “can someone break into the system?” AI red teaming asks “can someone make the model misbehave — and what can it reach when it does?”

When you need which

A traditional application with no AI features needs VAPT. An internal LLM tool with no sensitive data and no actions may start with lighter AI evaluation. Any LLM feature that touches customer data, retrieves internal documents or can call tools needs both — and because model, prompt and tool changes alter behaviour, AI red teaming belongs in a recurring evaluation cycle, not a one-off.

Running both in one engagement

The two can be scoped together: VAPT across the application and infrastructure, AI red teaming across the model, retrieval and tool layer, with findings reported against one risk register. Our AI Agent Guardrail & Red-Team Checklist is a practical starting point, and our AI Testing & Evaluations practice runs the adversarial side.

Frequently asked questions

Will a standard VAPT catch prompt injection?

No. VAPT tests code and infrastructure flaws. Prompt injection, data leakage through the model and unauthorised tool use require AI red teaming against the model, its prompts, retrieval and tools.

Can AI red teaming be fully automated?

Automated attack libraries add breadth, but human testers are still needed to find context-specific and multi-step attacks, particularly against agents with tool access.

Can VAPT and AI red teaming be done in one engagement?

Yes. They can be scoped together, with VAPT on the application and infrastructure and AI red teaming on the model, retrieval and tool layer, reported in one risk register.

How often should an LLM application be red teamed?

Whenever the model, system prompt, retrieval sources or tool permissions change materially, plus a regular cadence — behaviour shifts with each of those changes.