AI Act
1
High-risk AI systems: mandatory audit before EU deployment
1
%
Maximum AI Act fine, or €30M, for non-compliance
Model theft
1
Weight extraction via API probing, zero cost for the attacker
Prompt inj.
1
The #1 vector on autonomous LLM agents in 2025
A NEW ATTACK SURFACE THAT FEW KNOW HOW TO AUDIT
Model stealing: years of R&D in a few hours
An ML model represents millions of dollars in data and compute. It can be extracted via API probing (model stealing) or via a side-channel on the inference hardware. Once extracted, it can be deployed by competitors or resold. Protecting the weights is a commercial imperative as much as a security one.
Prompt injection: a single document is enough to hijack an agent
Prompt injection inserts instructions into an LLM agent's context via external data (documents, emails, web pages). The agent then performs unwanted actions — exfiltration, command execution, decision manipulation. The #1 risk for agentic systems in 2025.
OUR SERVICES
QREDTEAM
ADVERSARY SIMULATION
- LLM-agent Red Team — prompt injection, jailbreak, manipulation of autonomous decisions
- Model-extraction simulation via API probing on production models
- Adversarial-robustness testing — input manipulation to force errors
- Pentest of the ML infrastructure — inference servers, APIs, data pipelines
- ML supply-chain Red Team — dataset contamination, backdoors in dependencies.
QLAB
DEEP SECURITY RESEARCH
- Vulnerability research in ML frameworks (PyTorch, TensorFlow, ONNX, Triton)
- Audit of training-data pipelines — detection of data poisoning and backdoors
- Robustness analysis of embedded models (edge ML, firmware with local inference)
- Audit of inference APIs — weight exposure, extraction of architectural information
- Reverse engineering of compiled models (ONNX, TensorRT, CoreML) for AI Act compliance.
QSHIELD
SOFTWARE PROTECTION
- Protection of ML model weights against extraction and competitive cloning
- Anti-reverse engineering of embedded models on edge devices and firmware
- Obfuscation of model architectures to protect IP from adversaries
- Protection of inference pipelines in mobile or IoT applications
- Anti-cloning for model vendors deployed in unmanaged environments.
QUARKSLAB DIFFERENTIATOR
Traditional providers test the network perimeter around the ML infrastructure — not the model itself. Quarkslab audits what runs inside the model: the weights, the architectures, the embedded inference pipelines. We publish research on ML-framework vulnerabilities and offer QShield to protect model weights — a first in Europe.
WHAT WOULD WE SAY TO EACH OTHER, FACE TO FACE
What is your AI model worth — and how long would it take a competitor to extract its parameters via your API?
A model trained on your proprietary data represents millions of dollars in compute and years of expertise. It can be extracted via your API using well-documented model-stealing techniques — with no access whatsoever to your infrastructure.
Demonstrable compliance — not a generic report
We structure our assessments to feed your AI Act dossiers. Technical proof of robustness tailored to your risk class.
From pipeline to weights — the whole surface
We cover training data, architecture, weights, APIs and edge deployment — a chain no one else covers in full.
Your weights, tamper-proof in production
QShield protects the weights of your embedded models against extraction and cloning. A market first.
Publications on ML frameworks
Our engineers publish on ML-framework vulnerabilities and adversarial attacks. The credibility you won't find elsewhere.