Professional ethical hacking services for your business - From penetration testing and red teaming to AI and LLM security.
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Want to know how to prevent a hacker attack on your company? Use the skills and expertise of our certified ethical hackers. We stay ahead of emerging threats and use artificial intelligence in our simulated attacks, just like real-world adversaries do today.
Penetration testing reveals vulnerabilities in your systems, infrastructures, and processes, and helps to ensure compliance with standards like PCI – DSS, DORA, NIS2, ISO 27000, GDPR, and others.
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Are you confident in your overall level of security and want to experience what it's like to be as close to a real hacking attack as possible? Red Teaming is what you're looking for. Try a Threat-Led Penetration Test as well.
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Simulated attacks through social engineering help you test the extent of your organization's vulnerabilities due to human error. By combining phishing and vishing campaigns, we achieve a success rate of up to 40%.
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Artificial intelligence is transforming how organizations operate—and redefining the cybersecurity landscape. Citadelo is at the forefront of this shift. We combine 14 years of ethical hacking expertise with advanced AI-powered security testing, helping you innovate without compromising security.
AI-Powered Penetration Testing
We integrate AI directly into our penetration testing processes. It accelerates reconnaissance, expands test coverage, and helps uncover more vulnerabilities in less time. Final assessment and validation, however, always remain in the hands of experienced ethical hackers.
Securing Your AI Systems
Are you deploying large language models (LLMs), AI agents, or generative AI solutions? We test them against prompt injection, model data leakage, jailbreak techniques, and adversarial attacks—and help you prepare for compliance with the EU AI Act.
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Hacking is our passion, which we have been deepening daily for over 14 years. Thanks to this expertise, we are able to test most technologies with the highest quality. We continuously evolve our methodologies and leverage AI throughout the testing process to increase coverage and identify more vulnerabilities in less time. The final verdict, however, always comes from a skilled ethical hacker.
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For more than 14 years, we have been conducting ethical hacking for companies of all sizes and backgrounds. Therefore, no specifics of your business will surprise us today.
We test vulnerabilities that could compromise the integrity and availability of medical technologies or the confidentiality of the most sensitive medical data. We also prepare you for compliance with GDPR, ISO 27001, HIPAA or IEC 62304 standards.
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Automation and AI have brought a new perspective on security. We assist with security audits of industrial control systems (OT/SCADA) and verify the security compliance of your systems with NIS2, IEC 62443, ZKB and other standards. This protects your know-how and prevents costly production process outages.
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Partial penetration tests as well as the comprehensive Threat-Led Penetration Test provide you with the information needed to ensure a safer IT environment, systems, infrastructure, and applications and to comply with standards like DORA, PCI-DSS, PSD2, and others.
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Artificial intelligence is transforming the way organizations operate, but it is also creating entirely new attack vectors. Large language models (LLMs), AI agents, and integrations with internal systems introduce risks that traditional penetration tests often fail to address, including:
At Citadelo, we test AI systems with the same rigor we apply to web applications, APIs, cloud environments, and infrastructure. We identify weaknesses before attackers do and help you demonstrate compliance with regulatory frameworks such as the EU AI Act, NIS2, and DORA.
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Do you have additional needs in cybersecurity and want to minimize risks and their impacts? We can help you with a wide range of your needs.


With SOC as a Service, you gain a continuous overview of your network.
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We prepare you for external or internal audits and compliance with standards.
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Regular training of your employees reduces the risk of human error, the most common attack vector on your business.
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We would like to learn more about the individual needs of your company. Therefore, we offer a 15-minute consultation call.
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Our ethical principles are based on voluntary and mutually confidential relationships. We handle very sensitive information daily, for which we take responsibility and ensure its discreet and ethical processing.
We approach every project professionally, responsibly, and with full commitment. We regularly educate ourselves, share our technological know-how, and apply it in practice - including the integration of AI into our security testing methodologies.
We communicate clearly and understandably. If the real possibilities differ from your expectations, we will tell you. If an unexpected problem arises, we will let you know immediately.
We rely on lean and functional processes, within which we work to deliver the outputs of our work as quickly as possible, so that you can manage your time efficiently.
Our work does not end with the delivery of the final report. As part of a broader cooperation, we can help you address follow-up needs, for example, in the area of defensive security.
Didn’t find a position that suits you? No worries, we are always on the lookout for super talented geeks with hacker DNA and an ethical heart for various positions. So don’t hesitate—let us know about you!
We're looking for you. Another geeky brain with hacker DNA and an ethical heartbeat.
Contract:
Full time
Region:
Remote
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