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Contact UsDigital Forensics and Incident Response, Cloud Security
David is a managing partner at Alzette Information Security, a consulting company based in Hungary. He has more than ten years of professional experience in penetration testing, red teaming, vulnerability assessment, vulnerability management, security monitoring, security architecture design, incident response, digital forensics, and software development. He has two Master’s degrees and a Bachelor’s degree and currently holds 20+ security certifications. David is a certified instructor at SANS Institute, teaching FOR572 and FOR509, and he is the lead author of SANS DFIR NetWars. He has presented at conferences like BruCON, Hack.lu, Hacktivity, x33fcon, Nuit du Hack, Security BSides events, Pass the SALT, Black Alps, Security Session, and SANS@Night Talks.
David Szili got his first computer, a 486DX2, at the age of 10 and quickly discovered his talent and passion for bending and twisting systems and programs to achieve results beyond their intended purpose. One of the few games he had on the computer was SimCity, a game that he always ended up losing with a bankrupted city after 20-30 minutes of playing. David discovered a magazine explaining how to edit saved game files, eventually learning how to open the files of his saved games with a hex editor to overwrite the amount of money he had. From that point on, David was hooked and had found his career path.
In his instructor role at SANS, David loves to teach concepts of analysis, detection, and response as these are the skills needed by modern-day defenders who face determined attackers. David also focuses on practical application, even when teaching the theoretical background of a material, he makes sure to bring in real-life examples and case studies. He also puts extra emphasis on hands-on skills development and demos during class, because "as defenders of an organization," says David, "students need to 'train as they fight.'"
David consistently delivers material on point. His students expressed how much they enjoyed his teaching style and the experience he brings to their classes. He also provided great inputs to the material itself, both in terms of technical suggestions as well as tweaks that would aid in a clearer or more coherent delivery.
David is a good instructor. He shows relevant material in a fun and lively way, and he also connects the course content to real-life examples.
David has a very down to earth teaching style. His technical explanations are spot on, and his ability to absorb and feel out students in a classroom is always good.
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