Mathé Hertogh
Ph.D. student @ VUSec Amsterdam
Although originally a mathematician, I became very enthusiastic about computer security in recent years. Currently I am a PhD student at VU Amsterdam within the VUSec research group, (co)supervised by Cristiano Giuffrida and Herbert Bos. My research focuses on microarchitecture security, and in particular, transient execution vulnerabilities (e.g. Spectre & friends). More broadly, I am excited about computer architecture, operating systems, virtualization, and their security aspects.
Some example projects so far include: OS/hypervisor redesign for microarchitectural defense-in-depth, new Spectre exploitation with next-gen CPU features, combining Rowhammer and (Half-)Spectre, and microarchitectural exploitation of real-world commercial clouds.
Talk: Rain: Microarchitectural Cloud Leakage
Betta Lyon Delsordo
Betta Lyon Delsordo began her cyber journey at the age of 13 when she started teaching herself to code. This grew into freelance web development work for small businesses in Montana, where she soon realized she needed to know more about application security to keep her clients safe.
She began learning more about secure coding and interned with a hacking firm, and realized she was pretty good at it.
After completing a Master's in Cybersecurity at Georgia Tech, obtaining certifications such as the GPEN, and working her way up through pentesting, Betta is now working as a Penetration Tester at Amazon Web Services in Italy. Her areas of expertise include application security, secure code review, cloud security, and AI hacking. She has also built several AI tools for her employers to improve processes such as secure code review and threat intelligence insights.
Betta is very involved in the cybersecurity community and with organizations that support women in technology. She has been a mentor for 10 years with Technovation (an international girls coding program), and is an organizer and speaker for organizations promoting diversity in technology including RTC, WiCyS, WISP, and WSC.
Betta is a frequent conference speaker on topics ranging from AI hacking to secure coding, and has spoken for the World Bank and conferences like DEF CON 33, ESET World 2025, CyberCon 2025, and WiCyS 2025.
Talk: It’s Giving Insecure Vibes: Secure Coding Literacy for Vibe Coders
