Pentesting Services
With DEFION’s Penetration Testing, organizations gain executive-level assurance of how well their defenses hold up against real-world threats. By systematically probing networks, applications, and infrastructure, DEFION identifies vulnerabilities before adversaries exploit them—delivering clear, prioritized insights that help leadership strengthen resilience, reduce business risk, and demonstrate readiness. As part of Attack Readiness, penetration testing ensures security posture is not assumed but proven.
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Pentesting Services
A Pentest simulates real-world attacks across applications, infrastructure, and people to reveal security gaps that tools miss. Led by experienced ethical hackers, each test is tailored to your business and delivered with clear, actionable guidance. It shows how an attacker could gain access, escalate privileges and obtain sensitive data, replacing assumptions with evidence your team can act on.

Security Penetration Testing Process
Our penetration testing service gives you clear visibility of your organisation’s security posture and how it stands up to real-world threats. From uncovering vulnerabilities and simulating attacks to prioritising risks and validating fixes, we help you close critical gaps and strengthen resilience across your business.

Types of tested objects
Pentests can be performed on a wide range of targets, including web applications, IT infrastructure, cloud platforms, OT systems, IoT devices, and source code. Each test reveals vulnerabilities specific to that area, giving you clear priorities to reduce risk and strengthen resilience.

How Pentesting works in practice
Our penetration test works by simulating a real cyberattack in a controlled and safe way, showing exactly how attackers might break in, escalate, or move through your systems. We replicate different threat scenarios to reveal weaknesses and prove how resilient your defences really are.
What we’ll do
- Simulate a real-world cyberattack in a controlled and safe way
- Show exactly where attackers could break in, escalate, or move across systems
- Provide evidence your team can act on and guidance to strengthen resilience
Different pentest options
- White Box – Testers work with full knowledge of your systems for maximum depth and coverage
- Grey Box – Testers receive partial knowledge, replicating a targeted attacker’s perspective
- Black Box – Testers start with no knowledge, simulating a true outsider attack

Our approach and deliverables
Our approach follows the cyber kill chain, simulating each stage of a real-world attack, from reconnaissance to exploitation, to reveal how threats could unfold in your environment. The deliverables translate these findings into clear executive insights, prioritised risks, practical guidance, and accredited reporting you can rely on with stakeholders.

What is a pentest?
Penetration Testing (Pentest) is a core cybersecurity practice designed to uncover vulnerabilities before attackers can exploit them. It combines advanced offensive techniques with the expertise of seasoned ethical hackers to simulate real-world attacks across applications, networks, cloud environments, and users. Unlike automated scanners that provide generic results, Pentests deliver evidence-based insights by safely exploiting weaknesses, demonstrating potential attack paths, and validating real impact. Every pentest should be tailored to your environment, revealing how attackers could escalate access, pivot laterally, and reach sensitive data. Findings are mapped to frameworks like MITRE ATT&CK, OWASP, VCE and CCV, ensuring clarity, relevance, and alignment with industry standards. Reports include both technical detail and executive-level insights, along with clear, prioritized remediation guidance. When needed, DEFION specialists provide direct re-testing and advisory support, helping your team close gaps and strengthen resilience.
Key advantages include:
- Realistic attack simulation that proves resilience under active threat conditions
- Action-focused results with prioritized remediation based on true business impact
This combination of offensive expertise and practical guidance provides organizations with a clear, evidence-based view of their security posture, enabling faster fixes, stronger defenses, and greater confidence in their ability to withstand cyberattacks.
Why is Pentesting essential in modern cybersecurity?
Modern environments evolve at high speed, with new vulnerabilities emerging across applications, infrastructure, and cloud systems on a daily basis. Security tools alone cannot guarantee protection, as they often miss complex attack paths and supply chain vulnerabilities. Without realistic, adversary-driven testing, blind spots remain hidden until they are exploited. Pentests provide hard evidence of how your defences hold up under real-world attack conditions, reveal the true impact when vulnerabilities get exploited, and give you a clear, prioritized plan to fix what matters most.
- Reveals vulnerabilities in code, applications, APIs, (cloud) infrastructures and embedded systems
- Goes beyond automated scanners by expert involvement
- Prioritises security gaps taken from their real-world impact
- Identifies blind spots in configurations and connections
- Demonstrates the level of actual resilience under active attack conditions
- Provides clear guidance to fix weaknesses before attackers exploit them

What are the main challenges Pentests address?
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Unknown vulnerabilities in applications, APIs, and infrastructure remain hidden until exploited, giving attackers easy entry points that tools alone may not detect.
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False confidence from automated scanners creates blind spots, as they often miss complex attack chains or fail to validate the true impact of discovered issues.
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Difficulty prioritizing vulnerabilities by real-world risk leaves security teams overwhelmed with findings that may not reflect actual business threats.
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Blind spots in cloud services and third-party integrations expose organizations to risks beyond their direct control, complicating visibility and governance.
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Lack of evidence-based testing under active attack conditions prevents organizations from knowing if defenses truly hold when targeted.
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Reports that fail to provide clear remediation guidance delay fixes, leaving critical weaknesses unaddressed and increasing the chance of successful compromise.

- External Pentest
Your digital perimeter is the first thing adversaries will probe — and the first thing customers rely on. External Penetration Test simulates real-world attacks on your digital perimeter. Gain executive-level visibility of risks, validate defenses, and strengthen business continuity.
- Vendor Security Assessment
Assess and monitor the security maturity of your vendors with DEFION’s Vendor Security Assessment. Scalable, efficient, and board-ready for executive decision-making.
- Secure Development Training
DEFION’s Secure Development Training equips developers with secure coding skills to prevent vulnerabilities early in the lifecycle. Hands-on, standards-based, and tailored to your technology stack.
- Mobile App Security Assessment
Secure your iOS, Android, or cross-platform apps with DEFION’s Mobile App Security Assessment. Fast, collaborative, OWASP MASVS-aligned, and developer-focused.
- Email Risk Assessment
DEFION’s Email Risk Assessment evaluates and tests your organisation’s email security posture. Identify gaps, validate defenses, and receive actionable improvements against phishing, malware, and spoofing attacks.
- Cloud Security Assessment
With DEFION’s Cloud Security Assessment, leadership gains a clear understanding of how secure and resilient their cloud environments truly are. By assessing configurations, access controls, and exposure to evolving threats, DEFION highlights vulnerabilities that could impact business continuity and trust. Delivered with prioritized, executive-level insights, the service enables organizations to optimize cloud security investments, strengthen compliance, and maintain confidence in their digital transformation journey.
- Code Security Review
Identify vulnerabilities, logic flaws, and insecure implementations in your source code before they become risks. DEFION’s Code Security Review delivers expert manual analysis, clear reporting, and practical remediation advice to strengthen your application security.
- Internal Pentest
Cyber attackers don’t need to break the front door if they can move freely once inside. Our Internal Penetration Test gives executives a board-ready view of what an intruder could actually achieve within your environment — from accessing sensitive data to disrupting business operations.
- Web Application Pentest
With DEFION’s Web Application Penetration Testing, organizations gain clarity on the hidden risks within the digital services that drive customer engagement and business operations. By identifying vulnerabilities in web platforms before attackers can exploit them, DEFION helps leadership safeguard sensitive data, protect brand trust, and ensure business continuity. Delivered with clear, prioritized insights, our testing transforms complex technical findings into actionable guidance for executives—empowering smarter security decisions and stronger resilience.
- Red Teaming Services
DEFION Red Teaming delivers realistic cyberattack simulations to measure resilience and meet regulaatory requirements. Test detection, response, and business impact beyond penetration testing.
- Wireless Pentest
DEFION’s Wireless Penetration Test assesses WiFi security against real-world threats. Attack simulations, expert analysis, actionable reporting.
- OT Pentest
Operational Technology (OT) environments are the backbone of critical operations—but also prime targets for increasingly sophisticated threats. With DEFION’s OT Penetration Testing, leadership gains visibility into vulnerabilities that could disrupt production, safety, and continuity. Our approach uncovers risks in industrial systems, validates resilience against evolving threats, and delivers clear, prioritized insights to guide security investments where they matter most.
- OT Red Teaming
OT environments power production — but testing them is inherently risky if done without safeguards. DEFION’s OT Red Teaming delivers controlled, safety-first simulations of targeted attacks. Executives gain insight into real adversary tactics without jeopardizing uptime, equipment, or safety.

Turn 24/7 security monitoring into real response capability.
Speak with our experts and learn how rapid, expert-led response transforms your security posture.
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