LLM Integration Audit

Most LLM failures happen in the integration: RAG poisoning, unsafe output handling, leaked secrets, and “the model will behave” assumptions. We audit architecture, data flow, and control points.

What we cover

  • RAG pipeline integrity and retrieval boundaries

  • Prompt construction and system prompt isolation

  • Output handling, validation, and downstream execution safety

  • Secrets management (prompts, tools, logs, traces)

  • Cost controls and abuse resistance

  • Permissions and tool access design

Common Failure Modes

RAG poisoning and injection

RAG poisoning and injection

  • Malicious retrieved content altering behavior
  • Prompt injection via documents/web pages
  • Weak separation between instructions and data
Insecure output handling

Insecure output handling

  • Treating outputs as trusted code/queries
  • Missing validation and sanitization before execution
  • Unsafe automation triggered by model text
Leakage and operational abuse

Leakage and operational abuse

  • Secrets in prompts/logs and trace systems
  • Excessive token usage and cost blowups
  • Missing rate limits and anomaly controls

How we work

01

Architecture review

Architecture review

identify control points and trust boundaries

02

Data flow mapping

Data flow mapping

what can influence prompts and outputs

03

Adversarial testing

Adversarial testing

injection, leakage, and tool abuse

04

Validation checks

Validation checks

output gating and execution safety

05

Report

Report

concrete fixes tied to real failure modes

Tools and Standards

Core Tooling

  • OWASP Top 10 for LLM Applications
  • SSDF for secure integration and deployment
  • ATT&CK mindset for adversarial coverage
  • Evidence-driven testing and regression packs

Outputs

  • Architecture-safe integration checklist
PortswiggerGithubMitreOWASP

Testing focus

  • Prompt and data separation
  • Output validation discipline
  • Tool permissions and auditability
Background

Deliverables

Securing High-Impact Enterprise System

What Our Clients Trust us with

Client Video

We partnered with ImmuneBytes for a security audit of our products. Their expertise and professionalism instilled confidence throughout the process. They promptly addressed our questions, and their thorough analysis significantly enhanced our project's security, safeguarding our users' assets. We highly recommend ImmuneBytes and look forward to future collaborations.

Aruje Jahan

Lokr, Product Owner

ImmuneBytes demonstrated the perfect blend of expertise, commitment, and accountability, resulting in an audit that surpassed expectations. Their thorough approach and dedication ensured a high-quality outcome, reflecting their capability and professionalism in delivering exceptional service.

Dheeraj Borra

Stader Labs, Co-Founder

Robots can do audits, but the personal touch makes a difference. That's why we love Immunebytes! Not only do they do top-class audits, but they also take the time to understand our project and why certain things are done in specific ways. They take the time to ensure we feel heard, which shows in their work.

Yog Shrusti

Farmsent, Co-Founder & CEO

We are thoroughly impressed by their team, who left no scope for a communication gap and provided a quick turnaround time. They took up each requirement with utmost detail and acted on it. It was a pleasing experience to work with you. Looking to working with you guys again!

Mac P

Ethernity, Chief Engineer

What You Need to Know?

Frequently Asked Questions

Key risks include data exposure (sending sensitive data like PII to third-party APIs), prompt injection, hallucination-driven logic errors, cost abuse, and dependency on external model availability. Without proper safeguards, LLMs can introduce serious security and reliability issues.

We trace all data flowing into LLM prompts and outputs. If sensitive data such as PII, API keys, or proprietary logic is being sent to external providers, we identify and flag these risks.

Yes—we evaluate custom and fine-tuned models for training data leakage, susceptibility to adversarial inputs, and whether sensitive information can be extracted from the model.

Yes—we assess risks such as vendor lock-in, model version instability, rate limit abuse, and unexpected cost increases. We also evaluate resilience if an LLM provider changes pricing or becomes unavailable.

We test whether your application validates LLM outputs before using them. If outputs like file paths, SQL queries, or API calls are executed without verification, we flag it as a critical vulnerability.

Yes—we test for vector database poisoning, retrieval manipulation, and whether malicious documents can influence the system to return unsafe or misleading outputs.

Typically 1–3 weeks depending on the complexity of the integration.

$8K–$20K depending on scope. Use our pricing calculator for accurate estimates.

Secure Systems

Let’s Evaluate Risks and Secure your Systems

+917303699708team@immunebytes.com
Immunebytes

A blockchain security audit firm with the goal of making the Web3 space more secure through innovative and effective solutions.

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