Nexa CyberOwl®
Offensive security and awareness to outpace emerging threats
To stop an attacker you have to think and act like one. Which is why our specialists are more than security experts who know about hacking, they are real hackers. Our offensive security services provide detailed description and proof of concept for each finding. Issues are classified based on their exploitability and impact using an industry-standard ranking process (CVSS) and our own categorization based on what we understand about the business we are hacking on.
We find critical vulnerabilities every time! We have achieved this in more than 300 pentests done so far. A critical vulnerability can halt your business operations.
Surgical precision
In offensive cybersecurity, realism is everything. At Nexa, we don’t simulate attacks — we launch real ones under controlled conditions. We call it surgical offense: same mindset, same precision, same results.
We study how real threat actors think, move, and persist — not just their tools, but their tactics. That’s why our operations don’t look like standard pentests. They look like what your organization would face from an actual attacker.
With a 100% success rate in finding high or critical vulnerabilities, our results speak for themselves.
This isn’t about checking boxes — it’s about redefining what a pentest can do.
Standard vulnerability categorization emphasizes technical issues, but our approach prioritizes business impact, as high technical ratings don't always equate to operational risk.
We're excited to tackle your technical challenges! No matter your size, you can enjoy top-notch cybersecurity services just like the big players.
Nexa CyberOwl® offerings
Web application pentest
Focuses on identifying and exploiting vulnerabilities in web applications, APIs, and web-based services to discover flaws that could compromise data or disrupt services. We apply our business-centric approach to rank each finding based on exploitability and real impact, using industry-standard CVSS enriched with our own categorization to create a tailored and bulletproof solution.
Mobile app pentest
Targeting iOS and Android apps, this service evaluates the security of the application, its backend components, APIs, and interaction with devices and servers. Following our "intelligently tailored" philosophy, we search for hidden vulnerabilities in data storage, authentication, and third-party components, ensuring that mobile innovation never compromises the integrity of your infrastructure.
Infrastructure pentest
Evaluates internal network security, including servers and workstations, by assuming an initial internal foothold to identify flaws in configuration, network services, and segmentation. We are experts in breaking apart what is presumed safe and sound, transforming findings into actionable steps to build more dynamic and reliable systems that strengthen your cyber resilience.
Enterprise pentest
A comprehensive approach that simulates a large-scale external attack against an organization’s entire digital footprint to measure defense capabilities against persistent attackers. This solution seeks to demystify the complexity of cybersecurity through a 100% effectiveness rate in finding critical vulnerabilities, providing an expansive view of your value chain to safeguard your brand’s reputation and security.
How strong is your cybersecurity posture?
Are you willing to run it through the Nexa Pentest Challenge?
Work methodology
Hacking
We use a proprietary methodology to evaluate and diagnose each vulnerability, based on the Open Source Security Testing Methodology Manual (OSSTMM), OWASP Security Testing Guides, and NIST 800-115.
Classification
The severity of each vulnerability is classified using CVSS (Common Vulnerability Scoring System) and our proprietary Vulnerability Impact Assessment Tree, which takes into account our knowledge of your business and the experience of our ethical hackers.
The Vulnerability Impact Assessment Tree
The Vulnerability Impact Assessment Tree is a methodology that helps organizations to understand the potential impact of vulnerabilities in their systems and data. It considers the following factors:
→ The type of compromised information
→ The sensitivity of the information
→ The impact on business operations
→ The likelihood that the vulnerability can be exploited massively
The tree is designed to assign a qualitative metric to each vulnerability, which represents the level of impact that would be generated if the vulnerability were exploited.
This metric is based on the loss of CIA of affected information, the sensitivity of affected information, the impact on business operations, and the likelihood of massive exploitation.
Estimated effort
Up to 4 weeks of execution time. Up to 150 hours of work time. Critical findings will be reported as soon as they are discovered using an agile methodology of short iterations to adjust our focus based on the client's knowledge of their business.
Vulnerability report
A report containing a summary section for non-technical audiences that highlights the key findings and recommendations, and detailed technical documentation that provides step-by-step instructions on how to reproduce vulnerabilities and how to mitigate/remediate them.
Benefits
→ Reduced risk of a cyberattack: our pentest will help you identify and fix security vulnerabilities before they can be exploited by malicious actors. This will reduce your risk of a costly data breach or other cyberattack.
→ Improved security posture: our pentest will provide you with a detailed assessment of your security posture. This information can be used to prioritize your security investments and make informed decisions about how to improve your security posture.
→ Increased readiness against a cyberattack: our pentest report will provide you with step-by-step instructions on how to reproduce and mitigate the vulnerabilities we find. This information can be used to improve your incident response capabilities and reduce the impact of a cyberattack.
→ Compliance with regulations: many industries have regulations that require organizations to conduct regular pentests.
Case studies that make us proud
