Penetration testing
Resilience starts with testing. It helps you deliver secure, reliable digital experiences your users can count on.
Penetration testing is the evaluation process of any application, system, infrastructure, or service, based on predefined frameworks. The purpose of penetration testing is to identify security flaws, vulnerabilities, and address them to the clients technical team to improve the resiliency of business services to cyber threats and minimize the risk of a potential security breach.
What is penetration testing?
Penetration testing is a controlled simulation of a real cyberattack. Our security experts think like attackers and try to find weaknesses in your systems, applications, or infrastructure before anyone else does.
It’s more than just running automated tools. We manually test your defenses, verify what’s actually exploitable, and show how an attacker could move through your environment. Each test is tailored to your technology setup and follows industry standards such as OWASP ASVS, OWASP MASVS, and NIST SP 800-115.
The goal isn’t just to ask “are we secure?” but to understand exactly how an attack could happen and what you can do to prevent it.
NEVERHACK Estonia team is experienced on various penetration testings: infrastructure, operational technology, web application and mobile application testing.
Web Application Penetration Testing
Expose flaws before users or attackers find them.
Your web applications are the front line of your business, and often the easiest target. We perform deep, manual testing of web environments to identify vulnerabilities in authentication, session handling, data validation, APIs, and integrations. Guided by OWASP ASVS, our experts simulate real-world exploitation to uncover logic flaws, injection points, and misconfigurations that automated tools overlook. You’ll receive verified findings, mapped to business risk and compliance standards so you can secure your web presence with confidence.
Mobile Application Penetration Testing
Security that travels with your app.
Mobile apps carry sensitive data everywhere users go and every platform has its own weaknesses. Our team tests both iOS and Android apps under realistic attack conditions, following OWASP MASVS and ASVS standards. We assess how your app handles authentication, cryptography, and session management; analyze SDKs and third-party components; and validate protection against client-side tampering and data leakage. The result is a clear view of your app’s true resilience, so you can protect your users and your brand wherever they connect.
Infrastructure Penetration Testing
From perimeter to privilege, test your entire defense.
Your infrastructure is only as strong as its weakest configuration. We emulate real attacker behavior across your networks, servers, endpoints, and cloud environments to uncover exploitable paths before they’re used against you. This includes testing firewalls, segmentation, identity and access systems, VPNs, and post-exploitation resilience. Combining threat intelligence with hands-on techniques, our assessment delivers proof of exploitability, risk ratings, and actionable remediation insights that strengthen your overall security posture from the ground up.
Operational Technology (OT) Penetration Testing
Trust nothing. Validate everything.
Modern industrial systems are connected, automated, and often more exposed than they appear. Our OT penetration testing service replicates real attacker behavior to uncover vulnerabilities in your control systems, PLCs, SCADA environments, and industrial networks before they can be exploited.
We focus on identifying weaknesses that could disrupt operations or impact safety, using real-world attack simulations supported by threat intelligence and industry standards like IEC 62443 and NIST 800-82. Each engagement delivers verified findings, proof of exploitability, and practical guidance that helps you reduce risk without affecting live production.
An OT penetration test from NEVERHACK gives you a clear understanding of your true exposure and the confidence that your industrial systems can withstand both targeted attacks and human error. It’s how you protect uptime, safety, and trust in an increasingly connected world.
What You Get From It
Our penetration test gives you a clear, evidence-based view of your real security posture. You’ll get:
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Verified findings that confirm which issues are truly exploitable.
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Proof of exploitability showing how an attacker could use each weakness.
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Risk ratings that help you focus on what matters most.
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Security standard mapping to OWASP, ISO 27001, and other key frameworks.
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Outcome presentation that explains the results in plain language for both technical and business audiences.
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Actionable recommendations that guide your team in fixing issues quickly and effectively.
We also include a final review session to walk you through the results and make sure everything is fully understood.
Why It Matters
Most breaches happen because of known, fixable weaknesses that no one checked in time. Penetration testing helps you find those weaknesses before attackers do.
It gives you a realistic picture of how well your defenses actually work, helps you protect customer data, and shows your commitment to security. It also supports compliance with major standards and helps reduce financial and reputational risks.
Regular testing keeps your security honest. It turns unknown risks into clear actions and helps you stay ahead of threats that evolve every day.