LLM & AI Red Teaming and Penetration testing
Secure your AI-powered products and large language models (LLMs) from real-world threats. OnSecurity’s AI red teaming and penetration testing simulates malicious actors to uncover prompt injection, data leaks, API weaknesses, and unsafe model behaviour.
AI Red teaming with onsecurity
Our red team engagements mimic real attackers, focusing on the full threat landscape of AI systems. From bypassing content filters to exploiting unsecured APIs, we test how your model, infrastructure, and data behave under hostile input.
Using a mix of manual testing and automation, our AI security specialists probe your LLMs for weaknesses often missed by traditional pentesting.
What our AI Red Teaming covers
- Prompt injection and jailbreak attempts: Validate your guardrails by testing attempts to override system instructions.
- Data leakage: Check whether sensitive training or inference data can be extracted.
- Unsafe outputs and instruction bypass: Assess if harmful or disallowed content can be generated.
- API and plugin abuse: Test the resilience of integrations, plugins, and API endpoints.
- Supply chain risks: Review the security of third-party or fine-tuned models you rely on.
- Business logic and security control failures: Identify gaps in authentication, authorisation, and workflow design.
Ready to experience the future of pentesting?
Discover how combining expert insight with automation leads to faster, more precise, and high-impact penetration testing.
Our hybrid approach: Red Teaming and pentesting
AI threats don’t exist in a vacuum. That’s why we combine LLM-specific testing with broader penetration testing methods. We assess your application stack, APIs, model deployment, and integrations as a single attack surface.
This hybrid approach ensures you’re not only catching AI-specific bugs, but securing the full infrastructure around them.
How it works
Define scope: LLM, APIs, infrastructure, or all three
Simulate real-world attacks using adversarial techniques
Collaborate via our platform, real-time updates, direct comms
Receive instant, actionable reporting
Retest for free, once you’ve fixed the issues
Quick, high-quality pentests
Discover why our user-friendly platform and AI + human approach make pentesting hassle- free.
Flexible subscription plans
Simplify your testing and monitoring with a single monthly payment, combining regular penetration tests and continuous vulnerability scanning. Get predictable costs while receiving ongoing protection.
Instant quote & customised plans
Receive a real-time, personalised cost estimate through our intuitive platform. Tailor your testing needs with configurable options that suit your business goals and security requirements.
Effortless platform access
No more long scoping processes. Book tests directly through our platform or get personalised assistance from our sales team. Enjoy streamlined communication and automated workflow notifications for maximum efficiency.
Immediate, actionable reports
Access your findings instantly through our platform. Generate detailed reports at any time, offering both technical insights and high-level summaries—without the wait.
Free retests for resolved issues
Once you’ve addressed vulnerabilities, we’ll retest them for free within a flexible window, ensuring your systems remain secure at no additional cost.
Ongoing protection & threat intelligence
Sign up for continuous monitoring to access automated vulnerability scanning, along with situational awareness through threat intelligence, ensuring your defences stay up to date year-round.
Other Types of penetration testing
Find the penetration test to best suit your business and cybersecurity needs.
Red team it. Pentest it. Secure it.
Discover how combining expert insight with automation leads to faster, more precise, and high-impact penetration testing.
Frequently Asked Questions
Got a question you need answering? Our FAQs should help guide you
AI red teaming applies adversarial testing methods to artificial intelligence systems, probing how they respond to malicious prompts and unexpected inputs to identify security weaknesses and harmful behaviours before they can be exploited. Find out more in our guide to AI red teaming.
Red teaming targets how AI can be manipulated, misused, or exploited beyond classic vulnerabilities. We combine both approaches for holistic coverage.
If your goal is to assess the effectiveness of your IPS or broader defences, whitelisting isn’t recommended. However, if you’re more interested in discovering which vulnerabilities could be exploited once an attacker bypasses detection, a time-limited test with the tester's IP address whitelisted can provide more value.
We design our engagements to avoid disruption. If needed, we can test in staging environments or via safe prompt frameworks.
A detailed report with findings, severity ratings, attack paths, and clear next steps for remediation. Plus, a free retest once you’ve patched.
Receive a discovery report in 3-5 business days after testing concludes
All test data is encrypted, stored securely, and deleted after engagement.