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Years Security Expertise

Projects

Customer Satisfaction

Boutique Offensive Security. Enterprise-Grade Results.

With more than 14 years of offensive security expertise and over 300 completed projects, I serve as a trusted partner for organizations worldwide. Engagements range from DAX-listed corporations and Fortune Global 500 firms to mid-sized companies across Europe, India, Africa, and Japan - always with a focus on practical, actionable improvements to their cyber readiness.

Independent, Certified, Proven

OSCP • CISSP • Dipl.-Ing. (IT Security, Ruhr University Bochum) • Featured as an IT security expert on VOX Television (Germany)

Services

  • Red Team & Attack Simulations: Threat-informed attack simulations aligned with MITRE ATT&CK to measure detection and response in real conditions. TIBER-EU capable where required.
  • Targeted Penetration Testing (Web / Mobile / Network / Cloud / AI ): Manual, evidence-driven testing that uncovers what automated scans miss. Clear remediation guidance and retest support provided.
  • Penetration Testing for Certifications (ISO 27001 / BSI C5 / TISAX): Independent testing and auditor-ready documentation to support your certification or audit process. (Note: I'm not a certification body, I supply the testing and documentation auditors expect)
  • Incident Response: Specialized support for large-scale compromises such as Active Directory or web application breaches. Rapid triage, containment guidance, and post-incident hardening.

Who I Serve

  • CISOs & Security Leaders: Independent red team and penetration testing to validate controls, support board-level reporting, and provide solid audit evidence.
  • CIOs, CTOs & Engineering Teams: Pre-release security tests that reduce production risk without slowing delivery.
  • SMB Founders & CEOs: Right-sized testing that meets customer and regulator expectations - without hype, with clear, actionable outcomes.
  • Security Service Providers: Trusted on-demand support to handle peak demand or deliver specialist expertise seamlessly.

Industry Experience

Finance • Telecommunications • Logistics • Insurance • Energy • Health • Aviation • Retail • Technology

Why Work With a Boutique?

You work directly with senior expertise, not delegated to juniors. When additional capacity is required, I collaborate with a small, carefully vetted network - with no third-party data exposure without your explicit consent. Background checks are available on request. Discretion and confidentiality are non-negotiable principles in every engagement.

Your security, our priority.

Contact me today to secure your business.
Rene Feldhoff