We break your AI agents before attackers do.
Vantisec is an offensive AI-security studio. We prove where prompt injection, agent hijacking, and over-permissioned tools can leak your data — then we help you shut every one of them down.
AI agents fail in more ways than one.
We test the full OWASP LLM Top 10 and the emerging agentic threats — not just the headline exploit. Prompt injection simply demos the best, so here it is, live.
LLM01 · Prompt Injection — watch it land:
A complete AI-security practice
The same four moves the strongest AI-security teams run — find what you're exposing, attack it, harden it, and prove it's governed. We deliver them as focused engagements led by a principal, not a black-box scanner you're left to interpret.
Discover
We map every agent, copilot, and MCP server you run — and the data, tools, and permissions each one can reach.
Red-team
Adversarial testing across the OWASP LLM Top 10 — prompt injection, data leakage, excessive agency — until something breaks.
Harden
Least-privilege scoping, input fencing, output controls, and canary detection — put in place and verified, not just recommended.
Govern
Evidence, policy, and audit-ready mapping for the EU AI Act and NIS2 — so your rollout survives a security review.
Prompt Injection & Agent Hijacking
Direct and indirect injection testing against your agents and LLM apps. We prove whether a poisoned document, email, or web page can make your AI leak data or take actions it never should.
Offensive AIMCP & Agentic Tool Security
Least-privilege reviews of Model Context Protocol servers and tool integrations. We stop agents from reaching the secrets, systems, and data they were never meant to touch.
Agent GovernanceSecure AI Coding Tools
Roll out Copilot, Cursor, and Claude Code across your dev teams safely — data controls, guardrails, and usage policy that protect your source and your secrets.
DevSecOpsLLM Application Security
Model abuse, data leakage, RAG and knowledge-base poisoning, insecure output handling, and jailbreak resistance — assessed for anything you ship on top of an LLM.
AppSecAI Governance & Compliance
We get your AI programme audit-ready for the EU AI Act and NIS2 — risk assessments, control mapping, and policy your team can actually follow. We prepare you for the review; we don't hand out a compliance stamp.
Readiness & advisoryContinuous AI Red-Teaming
Severity-weighted, multi-run resistance scoring that captures the inconsistency real attacks exploit — not a one-shot check that passes by luck.
Continuous TestingWe break it in public. We fix it for you in private.
Every attack in our research is one we defend against for a living. Our open-source agent-hijack lab runs a full indirect prompt-injection attack — and the canary detection that catches it — entirely on your own machine. If we can break it, we can help you harden it.
New AI-security research, every week
Most AI-agent risk comes down to three things.
Three OWASP LLM risks show up again and again on real AI agents — what each one causes, how to stop it, and how they chain into a single attack.
Read the breakdown → AI SecurityYou didn’t deploy an AI agent. You deployed everything it touches.
An agent is only the front door — the real risk is every tool, connector and data source behind it, and how to lock them down.
Read the breakdown → AI GovernanceShadow AI: you can’t secure the AI you can’t see
The copilots, chat tools and agents adopted faster than anyone can govern them — why it matters, and how to track it.
Read the breakdown → AI SecurityWe told an AI email-scanner to ignore its instructions. It did.
A live look at indirect prompt injection — and the design choices that actually stop it.
Read the breakdown →One drop a week.
New attacks, defenses, and runnable labs — straight from our research bench.
Subscribe for updatesThe full security foundation
AI is the edge — but we secure the ground it runs on, too. Repeatable, fixed-scope engagements delivered with senior oversight.
Pen Testing & Red Team
Web, cloud, and internal testing that finds what scanners miss.
Cloud & IAM Posture
AWS, Azure & K8s hardening, CSPM, and Zero-Trust identity reviews.
Compliance & GRC
ISO 27001, SOC 2, GDPR, DORA & NIS2 — template-driven, deadline-ready.
Incident Response
24/7 containment, forensics, and recovery when it matters most.
Not sure where your AI risk stands?
Whether you're shipping an agent, adopting copilots, or facing an EU AI Act deadline — we'll give you a straight answer. No sales pressure, just honest advice.
Email usinfo@vantisec.com Call us+46 765 93 4892Request a free assessment
We reply within 24 hours.