David Szili is a principal consultant at Alzette Information Security, an information security consulting company based in Europe. He has more than ten years of professional experience in various areas like penetration testing, red teaming, security monitoring, security architecture design, incident response, digital forensics, and software development. David has two master's degrees, and holds several IT security certifications.

He is also a certified instructor at SANS Institute, teaching FOR572: Advanced Network Forensics and FOR509: Enterprise Cloud Forensics and Incident Response, and he is the lead author of SANS DFIR NetWars. David regularly speaks at international conferences like BruCON, Hack.lu, Hacktivity, x33fcon, Nuit du Hack, Pass the SALT, and Security BSides events.