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FOUNDATIONS OF AI RED TEAMING

May 21, 2025
Simona Bebe

Introduction

With the growing capabilities of artificial intelligence come growing risks. As AI systems become more autonomous, it’s no longer enough to ask, “Does it work?” We must also ask, “Can it be misused?” and “How does it fail under pressure?” That’s where AI red teaming comes in.

AI red teaming consists of actively trying to make an AI system fail in order to find its weaknesses before bad actors do. It’s like a crash test for AI models: you deliberately push them to their limits to see what goes wrong, then use that knowledge to build safer, more reliable AI.

In this three-part series, we’ll unpack the world of AI red teaming from the ground up. In Part 1, we’ll explore what AI red teaming is, where it comes from, and why it’s rapidly becoming essential to the safe deployment of modern AI systems. In Part 2, we’ll dive into how experts actually red team large language models and AI agents, including the techniques, tools, and real-world examples that shape their strategies. Finally, in Part 3, we’ll look at the complex challenges that red teamers face: the limits of current methods, the trade-offs between safety and usability, and the broader ethical and regulatory questions surrounding this work.

So with that, let’s dive into the core concepts, starting with the basics: what exactly is AI red teaming, and how did it become one of the most critical practices in modern AI development?

What is AI Red Teaming?

AI red teaming is the practice of proactively testing AI systems by simulating adversarial behavior in order to expose flaws, weaknesses, or risky behaviors before they can be exploited by malicious actors. It involves looking at a model and asking “How could this model break, be misused or behave in ways we didn’t intend?”.

The concept is rooted in military strategy and cybersecurity. The “red” team plays the adversary, attempting to breach defenses, while a “blue” team defends. In AI, there might not be firewalls or networks to hack in the traditional sense, but there are still guardrails and rules built into AI models. An AI red teamer’s goal is to “attack” the AI system’s safeguards. Unlike conventional software testing, which often checks whether a system works as intended, AI red teaming goes further: it intentionally tries to make the system fail. This might mean encouraging a language model with cleverly crafted prompts to generate disallowed content, leaking sensitive information or offering dangerous instructions. It could involve misleading a vision model with manipulated images or confusing a multi-modal agent into violating its instructions or pursuing unintended goals.

Red teaming can take many forms. In simple cases, it might involve human testers crafting unusual prompts designed to elicit problematic behavior from a chatbot. In more complex settings, red teaming includes automated testing pipelines, reinforcement learning-based exploit discovery or simulations of real-world environments where agents interact with dynamic systems. These approaches are often combined with domain knowledge to ensure that tests are realistic and relevant.

Effective AI red teaming requires a diverse team with overlapping areas of expertise. It’s not just about knowing how the AI model works, it’s about anticipating how people might try to break or misuse it. A well-rounded red team might include machine learning engineers, security researchers, sociologists, ethicists, psychologists and subject matter experts in sensitive domains. This diversity ensures a more complete view of risk, not just from a technical perspective, but also in terms of social, cultural and behavioral vulnerabilities.

It’s important to note that this is done ethically and in a controlled setting. Think of red teaming as “ethical hacking” for AI: you’re hacking the AI’s behavior with permission to expose problems so they can be fixed. The exposed vulnerabilities can be patched and stronger safety measures can be put in place.

Why “Red Team” an AI?

The reasoning behind AI red teaming is both practical and urgent. As AI systems become more powerful and widely adopted, the consequences of their misuse (or unintentional failure) become significantly more serious. Red teaming is one of the few strategies that directly tackles the unknowns of complex AI systems by stress-testing their limits before those limits are discovered by malicious users or fail in high-risk environments.

One of the primary reasons to red team an AI system is to detect hidden risks. AI models are well-known for behaving unpredictably when pushed outside their training data, when given cleverly engineered prompts or when interacting with other systems. Traditional testing, which checks outputs against a dataset of expected answers, often fails to reveal how models behave in edge cases or adversarial settings. Red teaming is designed to uncover these blind spots, identifying safety failures, security vulnerabilities or potential ethical issues. It’s better for “friendly testers” to find these issues now than for hostile actors to find them later.

Beyond risk detection, red teaming also helps prevent misuse and harm. By identifying how AI could be manipulated, whether to spread misinformation, produce unfair decisions or issue harmful instructions, developers can address vulnerabilities before deployment, which is especially important in high-stakes environments like finance, healthcare or autonomous systems. Red teaming helps to ensure that AI systems don’t end up being used as tools for fraud, discrimination or misinformation.

Red teaming also supports building trust and safety. Thorough testing and transparent improvements help organizations meet emerging AI safety regulations and demonstrate accountability to users and stakeholders. It shows that the AI has undergone rigorous scrutiny, not just to function well, but to tolerate edge cases and adversarial use. Essentially, red teaming is a way to “earn trust” by showing that the AI has been through rigorous safety checks.

Not everyone who interacts with an AI will have good intentions. Some users will intentionally try to break the rules (think of spammers trying to bypass an AI content filter or scammers attempting to trick an AI into revealing confidential info). Red teaming allows the developers to stay ahead of adversaries by experiencing and preparing for their attempts in advance. It’s a proactive defense: find the holes and patch them before someone malicious exploits them. The arms race between attackers and defenders is never-ending. As new vulnerabilities are discovered and patched, adversaries evolve their tactics. Therefore, red teaming is not a one-time checkbox, but a continuous process. Each model update, fine-tuning pass or new deployment environment can introduce new risks. Ongoing red teaming ensures that safety measures evolve alongside the systems themselves.

Moreover, feedback from red team tests often leads to improvements in the AI. It might involve refining the model’s training, adding new safeguards or clarifying instructions. Red teaming essentially makes AI systems more robust by continually challenging them and learning from the results.

In essence, AI red teaming is not just about avoiding negative outcomes. We red team AI because the stakes are high. It is a key part of building safer, more trustworthy AI systems by preparing for worst-case scenarios and learning from them before they happen.

Conclusion

AI red teaming is no longer a niche practice; it’s a critical pillar of responsible AI development. As we have seen, it’s more than just stress-testing models. It’s a methodology and defense strategy on its own. By simulating how things can go wrong, whether through misuse, adversarial inputs or unpredictability, red teaming helps us build AI systems that are not only functional but worthy of our trust.

But understanding why red teaming matters is just the beginning. In Part 2 of this series, we will go deeper into the mechanics of the practice: how experts actually red team large language models and AI agents in the real world. We will explore some of the tools they use, the techniques they rely on and the surprising ways in which AI can be manipulated. From prompt injections to jailbreaking and automated fuzzing, we will show how theory turns into action.

So stay tuned—the next step on this journey is where things get hands-on —and a little bit adversarial.

About the author

Test Automation Specialist | Belgium
Simona Bebe is a Test Automation Specialist, with a career in the Banking and Public sectors in Belgium. Her work focuses on implementing efficient automation frameworks that improve the quality and speed of software testing.

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