David Horak

📋 Biography

I’m a cybersecurity engineer, team lead at ALEF, and founder of Horizon Secured. I have 8+ years of hands-on experience and have completed 30+ security assessments and hardening projects across Windows and Active Directory environments. At ALEF I lead a consulting team that helps customers assess, secure, and improve their Windows/AD infrastructure—from baseline reviews to remediation and recovery planning. Through Horizon Secured I share practical resources—structured courses, step-by-step guides, and free tools—so practitioners can turn complex security into clear, actionable steps, with an emphasis on real-world hardening. I also speak at community events and mentor professionals.