Cybersecurity isn’t just about building walls; it’s also about testing how easily these walls can be breached. This is the idea behind red teaming, a security exercise where experts act like attackers to find weaknesses before they’re exploited.
The benefit of red teaming in cybersecurity is that you can’t genuinely understand how safe your systems are until someone attempts to outsmart you. In the current environment of threats, where attackers show creativity and patience, such testing has become crucial.
Red teaming requires particular skill—to think like a threat actor but act in your favor. That’s why some companies have built reputations as leaders in red teaming. We list them in this article. Below, you’ll find the top red teaming companies that can help you test your readiness against real-world threats.
White Knight Labs is a global cybersecurity consulting firm and the best red team company in Guys Mills. Their mission is to demonstrate for organizations the possible methods attackers could use to infiltrate and what may occur if they’re successful. By conducting realistic simulations, White Knight Labs lets their clients observe their defensive strategies from an external perspective and understand their true level of readiness.
The team works across many environments, including websites and apps, as well as internal networks and physical security systems such as cameras. Their red team exercises can reveal if attackers have the ability to navigate through a network undetected, manipulate security controls, or silently seize confidential data. Every involvement concludes with a comprehensive report that describes precisely what was discovered and the subsequent actions to be taken. If you’re looking for the best red teaming services, White Knight Labs is certainly worth considering.
Redscan is a managed security services provider (MSSP) specializing in threat detection, incident response, and adversarial simulation. They don’t restrict their clients to a single set of tools or technologies. For each engagement, Redscan chooses the right combination needed for the task. This method allows their services to be flexible for companies of any size. The company assists customers in sectors like Finance, Healthcare, Energy, Retail, and Transportation.
Among Redscan’s achievements are 98% customer satisfaction in 2024, a NPS score of 75, and over £1 trillion worth of assets protected. When it comes to red teaming in cybersecurity, their experts use combined attack methods and provide detailed reports with useful insights so you can be confident in your defensive measures.
Services & expertise: Penetration testing, web application testing, cloud penetration testing, agile penetration testing, network penetration testing, mobile application testing, red teaming, breach and attack simulation, ransomware preparedness, scenario-based testing
Location: London, UK
Founded: 2015
Team size: Up to 999 experts
Portfolio: Hospitality company, asset management firm, specialist bank, and others
LRQA is a worldwide top company in risk management and assurance. They support over 61,000 clients across more than 150 countries. The firm assists companies in finding and handling risks in areas like cybersecurity, sustainability, supply chain integrity, and operational safety.
Just in cybersecurity, LRQA helps organizations to find and handle tens of thousands of vulnerabilities each year. Among their extensive range of services, red teaming has a significant part. LRQA has a mature methodology for conducting live simulations, crafted to examine how good defenses stand up in real-world conditions. If you require the best red teaming services, LRQA can become your trusted partner in this initiative.
Services & expertise: ISO 9001, 14001, and 45001 revision, assessment and certification, inspection services, cyber security services, verification and report assurance, training, advisory services
Location: Birmingham, UK
Founded: 1985
Team size: Up to 10K employees
Portfolio: Aigens Technology, ezCaretech, and others
DataArt is a company that positions itself as “your partner for progress”. Their team is recognized for work in software engineering and product design, and the firm also places significant emphasis on cybersecurity. They’ve collaborated with over 400 clients around the globe (many of these clients have remained loyal to DataArt for more than seven years) and achieved an NPS of 80 in 2025.
The company provides tailored red teaming services. DataArt creates specific security testing situations considering each customer’s industry, infrastructure, and distinctive risk factors. This lets their clients be ready for various threats such as data leaks, espionage activities, or supply-chain attacks, causing financial loss. Looking to hire red teaming experts? DataArt is an excellent candidate.
Services & expertise: Data strategy, data platforms, data value realization, data migration, AI strategy, generative AI, AI-accelerated engineering, cloud migration, DevOps, legacy modernization, quality engineering, solution architecture, cybersecurity
Location: New York, US; London, UK; Munich, Germany; Zug, Switzerland
Outpost24 is one of the best red team companies in Sweden. Established back in 2001 by a small group of ethical hackers and developers from Sweden, this firm has expanded its reach globally as a provider of security solutions. Today, they assist organizations in handling their exposure to threats on an ongoing basis.
They have ISO/IEC 27001 certification and are supported by top investor Vitruvian Partners. Combined with years of experience, this has helped them earn the trust of more than 3,000 customers in 65 countries.
Services & expertise: Managed services, penetration testing, red teaming
Location: Karlskrona, Stockholm, Sweden; Philadelphia, US; Copenhagen, Denmark; Sophia Antipolis, France
Microminder Cyber Security has been operating longer than many of today’s threats have existed. They have spent over 40 years helping businesses remain safe, which makes them one of the most experienced players in the industry. Today, the company can boast the following figures: 97% of threats neutralized in real time, more than three million critical assets protected, and a 99% success rate in compliance audits.
By simulating advanced attacks, Microminder shows companies how an adversary might try to break in and what would happen if they did. These examinations do more than just uncover vulnerabilities—they show how effectively teams perform under stress. That’s why more than 2,600 organizations around the globe place their trust in Microminder.
Zenzero is one of the top red teaming companies in the UK that currently supports over 45,000 users. They offer a broad range of digital solutions from IT support and software development to AI and cybersecurity. Their clients appreciate their work, as evidenced by an impressive 98% customer satisfaction rate.
Red teaming is one of Zenzero’s offerings. Their experts create simulations of real-life attacks, testing not only systems and networks but also people and physical environments. The purpose is to provide companies with an accurate representation of how they would stand up to persistent attackers.
Services & expertise: IT support & service management, cloud-first solutions, disaster recovery, data backup, hosted VoIP services
Location: London, Birmingham, Coventry, Cambridge, Chichester, UK
Founded: 2004
Team size: 600+ IT professionals
Portfolio: Leeds Rhinos, AE Live Group, Forcefield, and others
MindPoint Group is a cybersecurity company that’s been helping businesses for more than 16 years. They assist businesses of all sizes, from big corporations to small firms. Their focus is on enhancing security and making it simpler to control. The team at MindPoint Group consists of more than 400 consultants; many are veterans who contribute their practical knowledge to each project the company undertakes.
Their credibility is clear from the organizations they serve. MindPoint Group collaborates with some of the world’s most secure companies, including major banks, global enterprises, and even NASA. If you need to hire red teaming experts, this company can be your go-to option.
Bluefire Redteam is one of the best red teaming companies in India. As of today, they have conducted over 300 evaluations in five countries and frequently receive high praise from customers for their quality work and excellent support.
Bluefire Redteam provides a complete set of services, like penetration testing and application security, and their team is especially known for their expertise in AI red teaming. As many companies are introducing tools driven by AI, Bluefire assists them in identifying and fixing vulnerabilities before they can be used by attackers. Bluefire Redteam creates simulations of real-world threats such as prompt injections, jailbreaks, and logic bypasses against applications powered by LLMs.
Services & expertise: AI/LLM application penetration testing, AI red teaming, red team services, purple team testing services, penetration testing services, source code review, application security as a service, cybersecurity simulation services
Location: Ahmedabad, India
Founded: 2020
Team size: 20+ offensive security experts
Portfolio: ProDevs, Content Flash AI, NotchHR, and others
CyberLab is one of the leading red team cyber security testing companies in the UK. The team consists of senior consultants and penetration testers who have over 15 years of experience. Recently, CyberLab has introduced CyberLab Control, which is a security-as-a-service platform. It automates essential tasks such as vulnerability scanning, phishing simulations, and security awareness training.
In addition, CyberLab also provides customized support packages that serve as an extension of internal security teams. Their experts manage daily operations and solutions, allowing businesses to concentrate on their main activities.
Services & expertise: Threat detection, posture assessment, vulnerability assessment, Microsoft 365 assessment, penetration testing, red teaming, security support, consultancy services
Location: Alderley Edge, UK
Founded: 2023
Team size: Up to 200 employees
Portfolio: NHS, Delvify, Sealey Group, and others
Conclusion
In this article, we’ve considered both comparatively new players in the red teaming scene, as well as those that have been working for decades and carry the weight of experience from years in the field.
So whether you’re drawn to the energy of newer firms or the steady expertise of established names, what matters most is choosing a partner you can trust to guide you and prepare your business for whatever comes next.
If you want to feature your red teaming company on this list, email us or submit a form in the Top Choices section. After a thorough assessment, we’ll decide whether it’s a valuable addition.
