My name is Filip Karczewski, and I am an experienced Penetration Tester.
I protect your business applications against emerging cyber threats. I deliver premium offensive security testing with executive-ready reporting.
Executing impact-driven assessments to uncover critical vulnerabilities
before malicious actors do.
Extensive experience ensures success in future challenges.
Certified cybersecurity professional with 7 years of experience specializing in penetration testing of web applications, APIs, and mobile applications (Android & iOS). I've identified many critical vulnerabilities in both pre-production and production environments, working with clients to improve their security. I primarily use grey-box and black-box testing methodologies, and my reports provide clear mitigation strategies and assess the business impact of each vulnerability.
As a former Accenture consultant, I spent 5 years performing penetration tests for a diverse range of clients across Europe, South America, the USA, the Middle East. Testing applications across such a diverse range of industries and environments has equipped me with highly adaptable methodologies, allowing me to quickly understand complex architectures and identify critical paths to compromise.
My approach combines technical expertise with clear communication, ensuring that complex security findings are translated into actionable recommendations. I strive to deliver high value for my clients and reduce risks that may impact their business.
Industry-recognized certifications that validate my expertise.
Upholding the highest ethical standards and strict confidentiality.
All testing activities, findings, and sensitive information remain strictly confidential and are never disclosed to third parties.
Every piece of client data is always stored using robust encryption, ensuring its confidentiality and integrity.
All testing data remains on secure, local storage, eliminating the risks associated with cloud exposure.
All penetration tests are conducted from pre-defined, static IP addresses, allowing for full whitelisting and complete traceability.
Security is built on transparency. Well-defined procedures and standardized communication eliminate ambiguity, ensuring every phase of the engagement is clear and predictable.
Privacy is the foundation of every project. A clear Non-Disclosure Agreement is established before any work begins, providing legal peace of mind for all sensitive corporate data.
No unverified code is ever run against client infrastructure. Every tool is rigorously vetted to prevent accidental damage.
Testing techniques are continuously updated to align with the latest industry standards and emerging cyber threats.
Only 100% local AI guarantees no risk of sensitive data leakage.
To deliver compelling, client-ready Proof-of-Concepts when they add meaningful value to vulnerability demonstrations. These targeted visual demonstrations help stakeholders understand complex attack scenarios and business impact, making the case for prioritized remediation where it matters most.
To assess the impact and probability of each vulnerability, delivering the most useful data to your stakeholders. This ensures you focus on the findings that matter most, maximizing the value of your pentest investment.
To deliver polished, actionable reports with AI-assisted quality assurance, ensuring clarity, accuracy, and alignment with industry standards. This provides your stakeholders with confident, data-driven insights to improve your security posture.
Final reports undergo rigorous AI-assisted quality assurance, ensuring they are polished, accurate, and easily understood. The AI checks for grammatical correctness, clarity of language, and consistency with industry standards.
Based in Poland. Serving clients worldwide.
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Connect with me on LinkedIn to view my professional background and establish a professional relationship for future collaborations.