AI/LLM Security
Trusted with AI security since the beginning
From prompt injection to data exfiltration to responsible AI failures - we've tested for these risks at scale, inside the platforms that defined the market. We build our own AI-driven tools to go deeper, and our clients trust us with their most sensitive systems.
What we test
From models to plugins to infrastructure
We examine the entire product ecosystem - AI models, LLM programs, plugins, and supporting cloud infrastructure - through penetration testing, vulnerability assessments, and compliance reviews.
Prompt Injection
Direct injection, indirect manipulation, and cross-boundary prompt injection attacks that exploit how your LLM processes inputs.
Jailbreaking
Testing output security controls to prevent your product from sharing sensitive or prohibited information when manipulated.
Responsible AI
Evaluating AI behavior against responsible AI standards to ensure your product acts in a safe, trustworthy, and ethical way. Our AI governance framework development helps establish these standards from the start.
Security Controls
Finding design flaws, weaknesses, and lax guardrails through testing that puts your LLM through real-world stress scenarios.
Training Data
Auditing the data at the heart of your model to ensure it's sound, safe, and accurate.
Plugin Risks
Checking the integrity of your LLM against flawed or risky plugins and interactions between separate components.
Our approach
Black box, gray box, and white box testing
Our penetration testing incorporates the latest research - from universal jailbreaking techniques to gradient-based attacks - providing thorough analysis of LLM vulnerabilities. We continuously update our methods as new research emerges. For adversarial scenarios that go beyond prompt testing, our AI-focused red team engagements simulate full attack chains against your AI systems.
Black Box
Simulated real-world attacks with no internal knowledge. We probe and stress-test every element of the LLM from the attacker's perspective, including LLM-vs-LLM testing where we use other models to attack your product.
Gray Box
Working with your development team to understand system prompts and input integration. This enables us to identify hotspots for prompt injection and find vulnerabilities like resource overconsumption and unsafe credential handling.
White Box
Full access to model weights for deep analysis. We use techniques like Greedy Coordinate Gradient, GBDA, and HotFlip to test adversarial robustness at the most fundamental level.
Resources
Agentic AI Security & Responsible Deployment Guide
Our guide for engineering and security teams building autonomous AI systems. Covers architecture patterns, identity management, data security, guardrails, and infrastructure recommendations.
Read the full guideCapability studies
How we test AI products
Our technical capability briefs describe the types of AI security work we do, how we approach it, and the categories of issues we find. Each represents a testing discipline developed through real engagements with the world's top technology companies.
AI Application & Agent Security
RAG chatbots through autonomous coding assistants and browser agents.
Read brief →MCP & Tool Integration Security
MCP servers and plugin surfaces exposing products to third-party AI systems.
Read brief →AI Red Teaming & Safety Testing
Adversarial testing against models for RAI violations and safety alignment.
Read brief →Custom Model & Training Security
Training, fine-tuning, or self-hosting models with different access levels.
Read brief →How we work
Our process
Step 1
Scoping
We assess the attack surface and define security objectives for your specific needs. We identify the most important features for testing and present a detailed proposal with fixed pricing.
Step 2
Kickoff
We dive into the architecture and code with your team, develop a prioritized test plan, set up communication channels, and establish a weekly status meeting.
Step 3
Execution
Targeted code review, surgical runtime testing, and infrastructure analysis - powered by our Nemesis platform. We're looking for meaningful issues that matter to you.
Step 4
Reporting
Detailed findings on vulnerabilities including successful prompt engineering and jailbreaking, along with thematic and design issues, followed by an in-person or remote presentation.
Proof point
Microsoft chooses Casaba to test M365 Copilot
Since January 2024, Microsoft has selected Casaba to perform ongoing security assessments of Copilot AI assistants across the M365 product suite. Our work has spanned multiple engagements over two years, covering AI/LLM security risks aligned with the OWASP Top Ten for LLMs.
Read the full case studyCommon questions
Frequently asked questions
What is AI penetration testing?
How do you test LLMs for security vulnerabilities?
What is prompt injection?
What frameworks guide your AI security testing?
Can you test AI agents and tool-calling systems?
Need your AI tested?
We've been doing this longer than most. Let's talk about what your system needs.
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