Leszek Mis Founder, Defensive Security

Leszek Miś is theFounder of DefensiveSecurity ( www.defensive-security.com) and VP, Head of Cyber Security in Collective Sense ( www.collective-sense.com) where he is responsible for strategy, business analysis, and technical product

security research & feature recommendations. He has over 13 years of experience in IT security market supporting the world’s largest customers in terms of exfiltration simulations and penetration tests, infrastructure hardening and general IT Security consultancy services. Next, to that, he has 10 years of experience in teaching and transferring a deep technical knowledge and his experience. He has trained 500+ students with the average evaluation on a 1-5 scale: 4.9. He is an IT Security Architect with offensive love and recognized expert in enterprise Open Source Security solutions market. Leszek provides network data exfiltration simulation services, web application & infrastructure penetration tests and OSINT. He specializes in low-level Linux/OS hardening and defensive security of web application platforms (ex. think about integration of WAF+BeeF!). He is also known and respected trainer/examiner of Red Hat solutions and author of many IT Security workshops:

  • ○  Open Source Defensive Security (OSDS)
  • ○  ModSecurity → Web Application Firewall rules vs attacks
  • ○  FreeIPA → Centralised identity management system
  • ○  SELinux – Creating and managing of SELinux policies
  • ○  Advanced RHEL/Centos Defensive Security & Hardening
  • ○  In&out Network Data Exfiltration Techniques

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