// 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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