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Instructors


David Szili

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.

David brings that passion and curiosity to his role as instructor for SANS FOR572: Advanced Network Forensics: Threat Hunting, Analysis, and Incident Response, "SANS strives to provide the best quality every time; something that aligns with my personal values." He also likes the fact that SANS is a very active member and supporter of the information security community.

Today, David is managing partner and CTO at Alzette Information Security, a consulting company based in Luxembourg. He has more than eight 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. 

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.'"

"As security analysts, we never wish to have less data," says David. "However, we have also reached the point where simply handling the volume of data available and effectively processing it is already a huge challenge, let alone finding signs of compromise and malicious activity." He addresses this challenge with his students by teaching them to build up a pragmatic analytic workflow and encouraging a deep understanding of why all the steps in a process need to be performed to get to a solution. David's proudest moments are when former students tell him that they implemented something he shared in class and it worked great.

David has master's degrees in computer engineering and in networks and telecommunication, along with a bachelor's degree in electrical engineering. He also holds several IT security certifications such as GSEC, GCED, GCIA, GCIH, GMON, GNFA, GYPC, GMOB, OSCP, OSWP and CEH. David speaks on a regular basis at international conferences like Hack.lu, BruCON, Hacktivity, Nuit du Hack, x33fcon, BSides Munich, BSidesBUD, and BSides Ljubljana, and he's on the organizing team for BSides Luxembourg, a conference fully dedicated to defense topics. David blogs about information security at jumpespjump.blogspot.com. David also has an Erdos number of 4.

In his spare time, David likes to work on hobby electronics projects and participate in the development of open-source security tools. David is also a huge fan of movies and TV series and he likes to go to concerts of bands like Walk of the Earth or Postmodern Jukebox.

Qualifications Summary

  • Managing partner and CTO of Alzette Information Security, a consulting company based in Luxembourg
  • Member of the organizing team for BSides Luxembourg, a conference fully dedicated to defense topics
  • Instructor for SANS FOR572: Advanced Network Forensics: Threat Hunting, Analysis, and Incident Response 
  • Certifications: GSEC, GCED, GCIA, GCIH, GMON, GNFA, GYPC, GMOB, OSCP, OSWP, CEH

Get to Know David Szili

  • Blog 
  • Presentations and Events: Hack.lu, BruCON, Hacktivity, x33fcon, Nuit du Hack, BSides Munich, BSidesBUD, BSides Ljubljana, BSides Luxembourg (part of the organizing team)


Upcoming Courses Taught By David Szili
Type Course / Location Date Register

Training Event
New
SANS San Francisco Summer 2019 San Francisco, CA
Jul 22, 2019 -
Jul 27, 2019
 

Training Event
New
SANS London August 2019 London, United Kingdom
Aug 5, 2019 -
Aug 10, 2019
 

Training Event
New
SANS Raleigh 2019 Raleigh, NC
Sep 16, 2019 -
Sep 21, 2019
 

Summit
New
SANS DFIR Europe Summit & Training 2019 - Prague Edition Prague, Czech Republic
Sep 30, 2019 -
Oct 6, 2019
 

Training Event
New
SANS Munich November 2019 Munich, Germany
Nov 18, 2019 -
Nov 23, 2019
 

Training Event
New
SANS San Francisco Winter 2019 San Francisco, CA
Dec 2, 2019 -
Dec 7, 2019
 

Summit
New
SANS Threat Hunting London Summit & Training 2020 London, United Kingdom
Jan 13, 2020 -
Jan 19, 2020
 

Training Event
New
SANS Brussels February 2020 Brussels, Belgium
Feb 17, 2020 -
Feb 22, 2020
 

Training Event
New
SANS Frankfurt March 2020 Frankfurt, Germany
Mar 30, 2020 -
Apr 4, 2020
 

*Course contents may vary depending upon location, see specific event description for details.