Gijs Hollestelle

Co-Founder & Security Specialist

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Gijs Hollestelle Co-Founder & Security Specialist, FalconForce

Gijs Hollestelle is specialized in advanced offensive and defensive capabilities. Gijs spent the last 15 years working in various technical security related roles related to ethical hacking, red teaming, cryptography, blue teaming and secure coding. Apart from solving technical challenges in the cyber security area he also enjoys teaching others to do the same. He is also an avid CTF player, competing at the highest level with multiple CTF teams including Eindbazen and Hack.ERS.


Training: Detection Engineering for Windows

The Intrusion Operations class provides students a unique opportunity to learn and implement real-world techniques used by advanced adversaries. An attacker can easily break into an organization by abusing misconfigurations, but the inverse also applies - defenders can easily detect red teams and malicious actors using commodity malware, default indicators, and more. You will learn how to overcome enterprise defenses and hardened infrastructure. You will leverage custom tooling and advanced configurations to break into a simulated corporate network and develop targeted malware profiles to remain undetected. You will leave this class with the skills and tools to develop custom tradecraft for long term persistence.