// zamrax

Dmitrii Strizhkov

Penetration Tester & Red Teamer

Canadian ethical hacker. OSCP · CRTO · PNPT certified.

// about

Who I Am

Canada-based penetration tester and ethical hacker. A lifelong student passionate about offensive security, helping organizations understand their vulnerabilities, and mentoring beginners entering the cybersecurity field.

Head of Offensive Security

Parabellyx Cybersecurity

February 2026 - Present

  • Scaled the offensive team, implementing a Shadow-to-Lead mentorship program that cut junior onboarding-to-billable time by 40%
  • Engineered a custom LLM-based agent for automated report generation, reducing administrative overhead by 20%
  • Architected and deployed an MCP server and gateway, automating 40% of internal engagement execution
  • Institutionalized peer-review process, reducing client clarification requests by 15%

Penetration Testing Practice Lead

Parabellyx Cybersecurity

April 2024 - February 2026

  • Led strategic planning and execution of the penetration testing practice, aligning security initiatives with business objectives
  • Conducted 50+ web application, 20+ network infrastructure, and wireless penetration tests independently
  • Led adoption of the updated OWASP ASVS 5.0 framework for enhanced application security verification
  • Reported directly to and assisted the CTO in shaping security strategy

Penetration Tester

Parabellyx Cybersecurity

February 2022 - April 2024

  • Conducted testing on 200+ web applications, 40+ network infrastructures, and wireless networks
  • Developed custom Python tooling, reducing testing time by 20% and report writing by 60%
  • Produced comprehensive reports for technical and executive audiences with tailored remediation strategies
  • Achieved average 60% improvement in client security maturity through personalized recommendations

Information Security Consultant

Digital Defence

May 2021 - February 2022

  • Conducted internal and external penetration tests on networks, operating systems, and databases as part of a 4-member team
  • Utilized NMAP and Nessus for network mapping, resulting in 20% improvement in network hardening
  • Authored comprehensive penetration testing reports with vulnerability analysis and remediation strategies
  • Assisted in incident response activities including forensic investigations and risk mitigation

Education

University of Toronto - Honours BSc, Specialist in Information Security, Major in Statistics

September 2017 - June 2021

// skills

Arsenal

Certifications

OSCPOffensive Security Certified Professional
CRTOCertified Red Team Operator
PNPTPractical Network Penetration Tester
eJPTeLearnSecurity Junior Penetration Tester
BSCPBurp Suite Certified Practitioner

Tools

Burp SuiteNMapNessusImpacketSQLMapMetasploitBloodhoundWiresharkCovenantPostman

Specializations

Web Application Penetration TestingInternal Penetration TestingExternal Perimeter TestingMobile Penetration TestingAI Security AssessmentActive DirectoryOSINTWireless SecurityFirewall Assessment

Platforms

WindowsLinuxAWSGCPAzure

Languages

PythonGoRustJavaCAssemblyBash

// blog

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