Hire expert AI penetration testers to secure your LLM apps faster. Our CREST-grade red teamers deliver complete AI/LLM pen tests — from OWASP LLM Top 10 mapping to reproducible proof-of-concept — in 2–4 weeks.
Our teams across the US, UK, Singapore, and India support clients through every timezone and regulatory context.
Traditional pentests don’t speak fluent prompt injection. Ours do.
A conventional web or network test won’t catch the failures that matter most in an AI app. Prompt injection, embedding inversion and excessive agency are semantic and behavioural attacks — not the configuration bugs a classic pentest hunts for. They need a purpose-built methodology, an isolated testbed, and testers who understand how models and agents actually work.
Prompt injection, jailbreaks, data egress, system-prompt leakage, RAG poisoning, excessive agency — the semantic attack surface.
The API, web front-end and cloud stack behind your AI remain exposed to the OWASP Web Top 10. We cover both, so nothing slips between the cracks.
The offensive phase runs against an isolated testbed. We don’t send your data to third-party model providers to test it.
The standard we test to
A recognised framework your auditors accept and your board understands — cross-referenced to MITRE ATLAS and scored for prioritisation.
What we actually test
Customer chatbots, internal copilots and product-embedded assistants — prompt injection, output handling and data egress under real attack.
Retrieval poisoning, embedding inversion and cross-tenant leakage in the pipeline that feeds your model.
Jailbreaks, guardrail bypass and multi-turn manipulation — adversarial testing of safety and misuse, not just single prompts.
Adversarial ML (evasion, extraction, inversion) plus model, plugin and MCP-server provenance and poisoning.
Our methodology
Inventory the models, apps, agents and tools in scope; agree data-handling; stand up the isolated testbed.
Decompose the system with CSA MAESTRO, map threats to OWASP and MITRE ATLAS, trace the attack surface.
Run AI red-team tooling (garak, PyRIT, promptfoo, DeepTeam) across every OWASP category.
Craft bespoke prompt-injection, excessive-agency and tool-chaining attacks — with a reproducible PoC for every finding.
Score with OWASP AIVSS and cross-map each finding to MITRE ATLAS and to your ISO 42001 / EU AI Act obligations.
Executive summary plus technical detail and fixes — then we retest the fixes at no extra cost.
What lands on your desk
Two reports in one: a plain-English executive summary that maps findings to business and compliance risk, and a technical report with a reproducible proof-of-concept and architecture-specific fix for every issue.
Book a 15-minute scoping call. We’ll define the attack surface, agree the rules of engagement and give you a straight quote.
No sales pressure. Speak with a certified assessor, not a call centre. Calls across the US, UK & Singapore.
A normal pentest finds configuration and injection bugs in the app and infrastructure. AI pen testing adds the semantic layer — prompt injection, excessive agency, embedding inversion, system-prompt leakage — that a classic test simply doesn’t look for. We do both layers in one engagement.
No. The offensive phase runs against an isolated testbed so your data is never sent to third-party model providers during testing. We’ll confirm the data-handling in the rules of engagement.
An executive summary mapped to business and compliance risk, plus a technical report with a reproducible proof-of-concept and a specific fix for every finding — and free retesting once you’ve remediated.
Yes — RAG pipelines and vector stores here, and autonomous agents on our dedicated agentic assessment. Tell us your architecture and we’ll scope the right mix.
Yes, and that’s a core advantage of using VISTA: the same team that tests your AI also runs your governance work, so every finding is cross-mapped to the controls auditors and regulators ask about.
Expert Auditors. Faster Certification.
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